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CWE-565

Reliance on Cookies without Validation and Integrity Checking

BaseIncompleteSimple75 CVEs
The product relies on the existence or values of cookies when performing security-critical operations, but it does not properly ensure that the setting is valid for the associated user.

Common consequences2

  • ConfidentialityIntegrityAvailabilityModify Application DataExecute Unauthorized Code or Commands

    Attackers can easily modify cookies, within the browser or by implementing the client-side code outside of the browser. Reliance on cookies without detailed validation and integrity checking can allow attackers to bypass authentication, conduct injection attacks such as SQL injection and cross-site scripting, or otherwise modify inputs in unexpected ways.

  • Access ControlGain Privileges or Assume Identity

    It is dangerous to use cookies to set a user's privileges. The cookie can be manipulated to escalate an attacker's privileges to an administrative level.

Potential mitigations4

  1. Architecture and Design

    Avoid using cookie data for a security-related decision.

  2. Implementation

    Perform thorough input validation (i.e.: server side validation) on the cookie data if you're going to use it for a security related decision.

  3. Architecture and Design

    Add integrity checks to detect tampering.

  4. Architecture and Design

    Protect critical cookies from replay attacks, since cross-site scripting or other attacks may allow attackers to steal a strongly-encrypted cookie that also passes integrity checks. This mitigation applies to cookies that should only be valid during a single transaction or session. By enforcing timeouts, you may limit the scope of an attack. As part of your integrity check, use an unpredictable, server-side value that is not exposed to the client.

Relationships3

CVEs referencing this CWE75

CVEDescriptionSeverityEPSSFlagsModified
CVE-2023-35885

CloudPanel 2 before 2.3.1 has insecure file-manager cookie authentication.

CRITICAL9.8
72%p99
PoC
2024-12-09
CVE-2026-0257

Authentication bypass vulnerabilities in the GlobalProtect portal and gateway of Palo Alto Networks PAN-OS® software allows the attacker to bypass security restrictions and establish an unauthorized VPN connection. Panorama and Cloud NGFW are not impacted by these issues.

CRITICAL9.1
19%p97
KEVPoC
2026-06-09
CVE-2025-64447

A reliance on cookies without validation and integrity checking vulnerability in Fortinet FortiWeb 8.0.0 through 8.0.1, FortiWeb 7.6.0 through 7.6.5, FortiWeb 7.4.0 through 7.4.10, FortiWeb 7.2.0 through 7.2.11, FortiWeb 7.0.0 through 7.0.11 may allow an unauthenticated attacker to execute arbitrary operations on the system via crafted HTTP or HTTPS request via forged cookies, requiring prior knowledge of the FortiWeb serial number.

HIGH7.1
7.37%p94
2026-02-26
CVE-2008-5784

V3 Chat - Profiles/Dating Script 3.0.2 allows remote attackers to bypass authentication and gain administrative access by setting the admin cookie to 1.

CRITICAL9.8
7.10%p93
Functional
2026-04-23
CVE-2020-7070

In PHP versions 7.2.x below 7.2.34, 7.3.x below 7.3.23 and 7.4.x below 7.4.11, when PHP is processing incoming HTTP cookie values, the cookie names are url-decoded. This may lead to cookies with prefixes like __Host confused with cookies that decode to such prefix, thus leading to an attacker being able to forge cookie which is supposed to be secure. See also CVE-2020-8184 for more information.

MEDIUM5.3
4.97%p91
2024-11-21
CVE-2019-7266

Linear eMerge 50P/5000P devices allow Authentication Bypass.

CRITICAL9.8
4.64%p91
2024-11-21
CVE-2025-65212

An issue was discovered in NJHYST HY511 POE core before 2.1 and plugins before 0.1. The vulnerability stems from the device's insufficient cookie verification, allowing an attacker to directly request the configuration file address and download the core configuration file without logging into the device management backend. By reading the corresponding username and self-decrypted MD5 password in the core configuration file, the attacker can directly log in to the backend, thereby bypassing the front-end backend login page.

CRITICAL9.8
4.62%p90
2026-01-29
CVE-2017-7279

An unprivileged user of the Unitrends Enterprise Backup before 9.0.0 web server can escalate to root privileges by modifying the "token" cookie issued at login.

NONE
4.39%p90
2026-05-13
CVE-2022-28113

An issue in upload.csp of FANTEC GmbH MWiD25-DS Firmware v2.000.030 allows attackers to write files and reset the user passwords without having a valid session cookie.

HIGH7.2
3.70%p88
PoC
2024-11-21
CVE-2017-6896

Privilege escalation vulnerability on the DIGISOL DG-HR1400 1.00.02 wireless router enables an attacker to escalate from user privilege to admin privilege just by modifying the Base64-encoded session cookie value.

NONE
3.70%p88
PoC
2026-05-13
CVE-2022-22785

The Zoom Client for Meetings (for Android, iOS, Linux, MacOS, and Windows) before version 5.10.0 failed to properly constrain client session cookies to Zoom domains. This issue could be used in a more sophisticated attack to send an unsuspecting users Zoom-scoped session cookies to a non-Zoom domain. This could potentially allow for spoofing of a Zoom user.

CRITICAL9.1
3.48%p88
2024-11-21
CVE-2021-41819

CGI::Cookie.parse in Ruby through 2.6.8 mishandles security prefixes in cookie names. This also affects the CGI gem through 0.3.0 for Ruby.

HIGH7.5
2.93%p85
2025-05-22
CVE-2021-3818

grav is vulnerable to Reliance on Cookies without Validation and Integrity Checking

MEDIUM5.3
2.37%p82
2024-11-21
CVE-2020-29668

Sympa before 6.2.59b.2 allows remote attackers to obtain full SOAP API access by sending any arbitrary string (except one from an expired cookie) as the cookie value to authenticateAndRun.

LOW3.7
1.96%p78
2024-11-21
CVE-2019-17104

In Centreon VM through 19.04.3, the cookie configuration within the Apache HTTP Server does not protect against theft because the HTTPOnly flag is not set.

HIGH7.5
1.94%p78
2024-11-21
CVE-2012-5631

ipa 3.0 does not properly check server identity before sending credential containing cookies

HIGH8.8
1.84%p76
2024-11-21
CVE-2018-20512

EPON CPE-WiFi devices 2.0.4-X000 are vulnerable to escalation of privileges by sending cooLogin=1, cooUser=admin, and timestamp=-1 cookies.

NONE
1.77%p75
2024-11-21
CVE-2018-5455

A Reliance on Cookies without Validation and Integrity Checking issue was discovered in Moxa OnCell G3100-HSPA Series version 1.4 Build 16062919 and prior. The application allows a cookie parameter to consist of only digits, allowing an attacker to perform a brute force attack bypassing authentication and gaining access to device functions.

NONE
1.58%p72
2024-11-21
CVE-2019-4305

IBM WebSphere Application Server Liberty could allow a remote attacker to obtain sensitive information caused by the improper setting of a cookie. IBM X-Force ID: 160951.

MEDIUM5.3
1.49%p71
2024-11-21
CVE-2018-5190

PicturesPro Photo Cart 6 and 7 before Security-Patch-2018-B allows remote attackers to access arbitrary customer accounts via a modified cookie, related to pc_head.php, pc_login.php, and pc_login_page.php.

NONE
1.40%p69
2024-11-21
CVE-2025-59247

Azure PlayFab Elevation of Privilege Vulnerability

CRITICAL9.8
1.39%p69
2026-02-22
CVE-2011-3887

Google Chrome before 15.0.874.102 does not properly handle javascript: URLs, which allows remote attackers to bypass intended access restrictions and read cookies via unspecified vectors.

NONE
1.39%p69
2026-04-29
CVE-2023-3050

Reliance on Cookies without Validation and Integrity Checking in a Security Decision vulnerability in TMT Lockcell allows Privilege Abuse, Authentication Bypass. This issue affects Lockcell: before 15.

CRITICAL9.8
1.31%p67
2026-05-22
CVE-2022-29248

Guzzle is a PHP HTTP client. Guzzle prior to versions 6.5.6 and 7.4.3 contains a vulnerability with the cookie middleware. The vulnerability is that it is not checked if the cookie domain equals the domain of the server which sets the cookie via the Set-Cookie header, allowing a malicious server to set cookies for unrelated domains. The cookie middleware is disabled by default, so most library consumers will not be affected by this issue. Only those who manually add the cookie middleware to the handler stack or construct the client with ['cookies' => true] are affected. Moreover, those who do not use the same Guzzle client to call multiple domains and have disabled redirect forwarding are not affected by this vulnerability. Guzzle versions 6.5.6 and 7.4.3 contain a patch for this issue. As a workaround, turn off the cookie middleware.

HIGH8.1
1.23%p65
2025-04-23
CVE-2021-28171

The Vangene deltaFlow E-platform does not take properly protective measures. Attackers can obtain privileged permissions remotely by tampering with users’ data in the Cookie.

CRITICAL9.8
1.18%p64
2024-11-21
CVE-2019-4330

IBM Security Guardium Big Data Intelligence (SonarG) 4.0 does not set the secure attribute for cookies in HTTPS sessions, which could cause the user agent to send those cookies in plaintext over an HTTP session. IBM X-Force ID: 161210.

MEDIUM4.3
1.12%p62
2024-11-21
CVE-2022-38297

UCMS v1.6.0 contains an authentication bypass vulnerability which is exploited via cookie poisoning.

CRITICAL9.8
1.11%p62
2024-11-21
CVE-2022-1148

Improper authorization in GitLab Pages included with GitLab CE/EE affecting all versions from 11.5 prior to 14.7.7, 14.8 prior to 14.8.5, and 14.9 prior to 14.9.2 allowed an attacker to steal a user's access token on an attacker-controlled private GitLab Pages website and reuse that token on the victim's other private websites

MEDIUM6.5
1.09%p61
2024-11-21
CVE-2020-4749

IBM Spectrum Scale 5.0.0 through 5.0.5.2 does not set the secure attribute on authorization tokens or session cookies. Attackers may be able to get the cookie values by sending a http:// link to a user or by planting this link in a site the user goes to. The cookie will be sent to the insecure link and the attacker can then obtain the cookie value by snooping the traffic. IBM X-Force ID: 188518.

MEDIUM4.3
0.99%p58
2024-11-21
CVE-2018-19224

An issue was discovered in LAOBANCMS 2.0. /admin/login.php allows spoofing of the id and guanliyuan cookies.

NONE
0.98%p58
2024-11-21
CVE-2016-15002

A vulnerability, which was classified as critical, was found in MONyog Ultimate 6.63. This affects an unknown part of the component Cookie Handler. The manipulation of the argument HasServerEdit/IsAdmin leads to privilege escalation. It is possible to initiate the attack remotely.

HIGH8.8
0.87%p54
2025-04-15
CVE-2023-32725

The website configured in the URL widget will receive a session cookie when testing or executing scheduled reports. The received session cookie can then be used to access the frontend as the particular user.

HIGH8.8
0.85%p53
2024-11-21
CVE-2014-125112

Plack::Middleware::Session::Cookie versions through 0.21 for Perl allows remote code execution. Plack::Middleware::Session::Cookie versions through 0.21 has a security vulnerability where it allows an attacker to execute arbitrary code on the server during deserialization of the cookie data, when there is no secret used to sign the cookie.

CRITICAL9.8
0.83%p53
2026-05-06
CVE-2021-29624

fastify-csrf is an open-source plugin helps developers protect their Fastify server against CSRF attacks. Versions of fastify-csrf prior to 3.1.0 have a "double submit" mechanism using cookies with an application deployed across multiple subdomains, e.g. "heroku"-style platform as a service. Version 3.1.0 of the fastify-csrf fixes it. the vulnerability. The user of the module would need to supply a `userInfo` when generating the CSRF token to fully implement the protection on their end. This is needed only for applications hosted on different subdomains.

MEDIUM6.5
0.83%p53
2024-11-21
CVE-2020-26955

When a user downloaded a file in Firefox for Android, if a cookie is set, it would have been re-sent during a subsequent file download operation on the same domain, regardless of whether the original and subsequent request were in private and non-private browsing modes. *Note: This issue only affected Firefox for Android. Other operating systems are unaffected.*. This vulnerability affects Firefox < 83.

MEDIUM6.5
0.82%p52
2024-11-21
CVE-2019-4638

IBM Security Secret Server 10.7 does not set the secure attribute on authorization tokens or session cookies. This could allow an attacker to obtain sensitive information using man in the middle techniques. IBM X-Force ID: 170044.

LOW3.7
0.79%p51
2024-11-21
CVE-2022-36032

ReactPHP HTTP is a streaming HTTP client and server implementation for ReactPHP. In ReactPHP's HTTP server component versions starting with 0.7.0 and prior to 1.7.0, when ReactPHP is processing incoming HTTP cookie values, the cookie names are url-decoded. This may lead to cookies with prefixes like `__Host-` and `__Secure-` confused with cookies that decode to such prefix, thus leading to an attacker being able to forge cookie which is supposed to be secure. This issue is fixed in ReactPHP HTTP version 1.7.0. As a workaround, Infrastructure or DevOps can place a reverse proxy in front of the ReactPHP HTTP server to filter out any unexpected `Cookie` request headers.

MEDIUM5.3
0.78%p51
2025-04-23
CVE-2017-8034

The Cloud Controller and Router in Cloud Foundry (CAPI-release capi versions prior to v1.32.0, Routing-release versions prior to v0.159.0, CF-release versions prior to v267) do not validate the issuer on JSON Web Tokens (JWTs) from UAA. With certain multi-zone UAA configurations, zone administrators are able to escalate their privileges.

NONE
0.75%p50
2026-05-13
CVE-2024-1551

Set-Cookie response headers were being incorrectly honored in multipart HTTP responses. If an attacker could control the Content-Type response header, as well as control part of the response body, they could inject Set-Cookie response headers that would have been honored by the browser. This vulnerability affects Firefox < 123, Firefox ESR < 115.8, and Thunderbird < 115.8.

MEDIUM6.1
0.74%p50
2025-04-02
CVE-2024-28288

Ruijie RG-NBR700GW 10.3(4b12) router lacks cookie verification when resetting the password, resulting in an administrator password reset vulnerability. An attacker can use this vulnerability to log in to the device and disrupt the business of the enterprise.

CRITICAL9.8
0.72%p49
2025-06-30
CVE-2025-14440

The JAY Login & Register plugin for WordPress is vulnerable to authentication bypass in versions up to, and including, 2.4.01. This is due to incorrect authentication checking in the 'jay_login_register_process_switch_back' function with the 'jay_login_register_process_switch_back' cookie value. This makes it possible for unauthenticated attackers to log in as any existing user on the site, such as an administrator, if they have access to the user id.

CRITICAL9.8
0.69%p48
PoC
2026-04-15
CVE-2020-15128

In OctoberCMS before version 1.0.468, encrypted cookie values were not tied to the name of the cookie the value belonged to. This meant that certain classes of attacks that took advantage of other theoretical vulnerabilities in user facing code (nothing exploitable in the core project itself) had a higher chance of succeeding. Specifically, if your usage exposed a way for users to provide unfiltered user input and have it returned to them as an encrypted cookie (ex. storing a user provided search query in a cookie) they could then use the generated cookie in place of other more tightly controlled cookies; or if your usage exposed the plaintext version of an encrypted cookie at any point to the user they could theoretically provide encrypted content from your application back to it as an encrypted cookie and force the framework to decrypt it for them. Issue has been fixed in build 468 (v1.0.468).

MEDIUM6.3
0.69%p48
2024-11-21
CVE-2022-35284

IBM Security Verify Information Queue 10.0.2 could disclose sensitive information due to a missing or insecure SameSite attribute for a sensitive cookie. IBM X-Force ID: 230811.

HIGH7.5
0.62%p45
2024-11-21
CVE-2022-2615

Insufficient policy enforcement in Cookies in Google Chrome prior to 104.0.5112.79 allowed a remote attacker to leak cross-origin data via a crafted HTML page.

MEDIUM6.5
0.61%p44
2024-11-21
CVE-2021-41263

rails_multisite provides multi-db support for Rails applications. In affected versions this vulnerability impacts any Rails applications using `rails_multisite` alongside Rails' signed/encrypted cookies. Depending on how the application makes use of these cookies, it may be possible for an attacker to re-use cookies on different 'sites' within a multi-site Rails application. The issue has been patched in v4 of the `rails_multisite` gem. Note that this upgrade will invalidate all previous signed/encrypted cookies. The impact of this invalidation will vary based on the application architecture.

HIGH8.8
0.61%p44
2024-11-21
CVE-2024-9970

The FlowMaster BPM Plus system from NewType has a privilege escalation vulnerability. Remote attackers with regular privileges can elevate their privileges to administrator by tampering with a specific cookie.

HIGH8.8
0.59%p44
2024-10-17
CVE-2023-41084

Session management within the web application is incorrect and allows attackers to steal session cookies to perform a multitude of actions that the web app allows on the device.

CRITICAL9.8
0.58%p43
2024-11-21
CVE-2019-4688

IBM Security Guardium Data Encryption (GDE) 3.0.0.2 does not set the secure attribute on authorization tokens or session cookies. Attackers may be able to get the cookie values by sending a http:// link to a user or by planting this link in a site the user goes to. The cookie will be sent to the insecure link and the attacker can then obtain the cookie value by snooping the traffic. IBM X-Force ID: 171825.

MEDIUM4.3
0.57%p42
2024-11-21
CVE-2024-21583

Versions of the package github.com/gitpod-io/gitpod/components/server/go/pkg/lib before main-gha.27122; versions of the package github.com/gitpod-io/gitpod/components/ws-proxy/pkg/proxy before main-gha.27122; versions of the package github.com/gitpod-io/gitpod/install/installer/pkg/components/auth before main-gha.27122; versions of the package github.com/gitpod-io/gitpod/install/installer/pkg/components/public-api-server before main-gha.27122; versions of the package github.com/gitpod-io/gitpod/install/installer/pkg/components/server before main-gha.27122; versions of the package @gitpod/gitpod-protocol before 0.1.5-main-gha.27122 are vulnerable to Cookie Tossing due to a missing __Host- prefix on the _gitpod_io_jwt2_ session cookie. This allows an adversary who controls a subdomain to set the value of the cookie on the Gitpod control plane, which can be assigned to an attacker’s own JWT so that specific actions taken by the victim (such as connecting a new Github organization) are actioned by the attackers session.

MEDIUM4.1
0.56%p42
2026-04-15
CVE-2023-32612

Client-side enforcement of server-side security issue exists in WL-WN531AX2 firmware versions prior to 2023526, which may allow an attacker with an administrative privilege to execute OS commands with the root privilege.

HIGH7.2
0.56%p42
2024-11-27
CVE-2024-21872

The device allows an unauthenticated attacker to bypass authentication and modify the cookie to reveal hidden pages that allows more critical operations to the transmitter.

HIGH7.5
0.55%p42
2026-04-15
CVE-2024-22186

The application suffers from a privilege escalation vulnerability. An attacker logged in as guest can escalate his privileges by poisoning the cookie to become administrator.

HIGH8.8
0.55%p42
2026-04-15
CVE-2025-2395

The U-Office Force from e-Excellence has an Improper Authentication vulnerability, allowing unauthenticated remote attackers to use a particular API and alter cookies to log in as an administrator.

CRITICAL9.8
0.53%p40
2025-11-18
CVE-2022-50926

WAGO 750-8212 PFC200 G2 2ETH RS firmware contains a privilege escalation vulnerability that allows attackers to manipulate user session cookies. Attackers can modify the cookie's 'name' and 'roles' parameters to elevate from ordinary user to administrative privileges without authentication.

CRITICAL9.8
0.48%p37
2026-04-15
CVE-2024-0947

Reliance on Cookies without Validation and Integrity Checking vulnerability in Talya Informatics Elektraweb allows Session Credential Falsification through Manipulation, Accessing/Intercepting/Modifying HTTP Cookies, Manipulating Opaque Client-based Data Tokens. This issue affects Elektraweb: before v17.0.68.

CRITICAL9.8
0.48%p37
2026-06-03
CVE-2022-30620

On Cellinx Camera with guest enabled, attacker with web access can elevate privileges to administrative: "1" to "0" privileges by changing the following cookie values from "is_admin", "showConfig". Administrative Privileges which allows changing various configuration in the camera.

HIGH8.8
0.44%p35
2024-11-21
CVE-2021-47706

COMMAX Biometric Access Control System 1.0.0 contains an authentication bypass vulnerability that allows unauthenticated attackers to access sensitive information and circumvent physical controls in smart homes and buildings by exploiting cookie poisoning. Attackers can forge cookies to bypass authentication and disclose sensitive information.

NONE
0.43%p35
2026-04-15
CVE-2021-33842

Improper Authentication vulnerability in the cookie parameter of Circutor SGE-PLC1000 firmware version 0.9.2b allows an attacker to perform operations as an authenticated user. In order to exploit this vulnerability, the attacker must be within the network where the device affected is located.

HIGH8.8
0.43%p34
2024-11-21
CVE-2026-5130

The Debugger & Troubleshooter plugin for WordPress was vulnerable to Unauthenticated Privilege Escalation in versions up to and including 1.3.2. This was due to the plugin accepting the wp_debug_troubleshoot_simulate_user cookie value directly as a user ID without any cryptographic validation or authorization checks. The cookie value was used to override the determine_current_user filter, which allowed unauthenticated attackers to impersonate any user by simply setting the cookie to their target user ID. This made it possible for unauthenticated attackers to gain administrator-level access and perform any privileged actions including creating new administrator accounts, modifying site content, installing plugins, or taking complete control of the WordPress site. The vulnerability was fixed in version 1.4.0 by implementing a cryptographic token-based validation system where only administrators can initiate user simulation, and the cookie contains a random 64-character token that must be validated against database-stored mappings rather than accepting arbitrary user IDs.

HIGH8.8
0.42%p34
2026-04-24
CVE-2024-9820

The WP 2FA with Telegram plugin for WordPress is vulnerable to Two-Factor Authentication Bypass in versions up to, and including, 3.0. This is due to the two-factor code being stored in a cookie, which makes it possible to bypass two-factor authentication.

HIGH7.5
0.39%p31
2026-04-08
CVE-2025-31120

NamelessMC is a free, easy to use & powerful website software for Minecraft servers. In version 2.1.4 and prior, an insecure view count mechanism in the forum page allows an unauthenticated attacker to artificially increase the view count. The application relies on a client-side cookie (nl-topic-[tid]) (or session variable for guests) to determine if a view should be counted. When a client does not provide the cookie, every page request increments the counter, leading to incorrect view metrics. This issue has been patched in version 2.2.0.

MEDIUM5.3
0.38%p30
2025-05-13
CVE-2021-20450

IBM Cognos Controller 10.4.1, 10.4.2, and 11.0.0 does not set the secure attribute on authorization tokens or session cookies. Attackers may be able to get the cookie values by sending a http:// link to a user or by planting this link in a site the user goes to. The cookie will be sent to the insecure link and the attacker can then obtain the cookie value by snooping the traffic. IBM X-Force ID: 196640.

MEDIUM4.3
0.37%p28
2025-06-18
CVE-2021-36338

Unisphere for PowerMax versions prior to 9.2.2.2 contains a privilege escalation vulnerability. An adjacent malicious user could potentially exploit this vulnerability to escalate their privileges and access functionalities they do not have access to. CVE-2022-31233 addresses the partial fix in CVE-2021-36338.

HIGH8.0
0.36%p28
2024-11-21
CVE-2022-3083

All versions of Landis+Gyr E850 (ZMQ200) are vulnerable to CWE-784: Reliance on Cookies Without Validation and Integrity. The device's web application navigation depends on the value of the session cookie. The web application could become inaccessible for the user if an attacker changes the cookie values.

MEDIUM5.4
0.35%p27
2025-01-16
CVE-2024-28233

JupyterHub is an open source multi-user server for Jupyter notebooks. By tricking a user into visiting a malicious subdomain, the attacker can achieve an XSS directly affecting the former's session. More precisely, in the context of JupyterHub, this XSS could achieve full access to JupyterHub API and user's single-user server. The affected configurations are single-origin JupyterHub deployments and JupyterHub deployments with user-controlled applications running on subdomains or peer subdomains of either the Hub or a single-user server. This vulnerability is fixed in 4.1.0.

MEDIUM6.1
0.33%p24
2025-09-02
CVE-2023-45128

Fiber is an express inspired web framework written in Go. A Cross-Site Request Forgery (CSRF) vulnerability has been identified in the application, which allows an attacker to inject arbitrary values and forge malicious requests on behalf of a user. This vulnerability can allow an attacker to inject arbitrary values without any authentication, or perform various malicious actions on behalf of an authenticated user, potentially compromising the security and integrity of the application. The vulnerability is caused by improper validation and enforcement of CSRF tokens within the application. This issue has been addressed in version 2.50.0 and users are advised to upgrade. Users should take additional security measures like captchas or Two-Factor Authentication (2FA) and set Session cookies with SameSite=Lax or SameSite=Secure, and the Secure and HttpOnly attributes as defense in depth measures. There are no known workarounds for this vulnerability.

HIGH8.8
0.31%p23
2024-11-21
CVE-2026-39324

Rack::Session is a session management implementation for Rack. From 2.0.0 to before 2.1.2, Rack::Session::Cookie incorrectly handles decryption failures when configured with secrets:. If cookie decryption fails, the implementation falls back to a default decoder instead of rejecting the cookie. This allows an unauthenticated attacker to supply a crafted session cookie that is accepted as valid session data without knowledge of any configured secret. Because this mechanism is used to load session state, an attacker can manipulate session contents and potentially gain unauthorized access. This vulnerability is fixed in 2.1.2.

CRITICAL9.8
0.27%p18
2026-05-13
CVE-2023-45141

Fiber is an express inspired web framework written in Go. A Cross-Site Request Forgery (CSRF) vulnerability has been identified in the application, which allows an attacker to obtain tokens and forge malicious requests on behalf of a user. This can lead to unauthorized actions being taken on the user's behalf, potentially compromising the security and integrity of the application. The vulnerability is caused by improper validation and enforcement of CSRF tokens within the application. This vulnerability has been addressed in version 2.50.0 and users are advised to upgrade. Users should take additional security measures like captchas or Two-Factor Authentication (2FA) and set Session cookies with SameSite=Lax or SameSite=Secure, and the Secure and HttpOnly attributes.

HIGH8.8
0.27%p18
2024-11-21
CVE-2025-48980

In Brave Browser Desktop versions prior to 1.83.10 that have the split view feature enabled, the "Open Link in Split View" context menu item did not respect the SameSite cookie attribute. Therefore SameSite=Strict cookies would be sent on a cross-site navigation using this method.

NONE
0.26%p17
2026-04-15
CVE-2024-55211

An issue in Think Router Tk-Rt-Wr135G V3.0.2-X000 allows attackers to bypass authentication via a crafted cookie.

HIGH8.4
0.24%p15
PoC
2025-04-25
CVE-2026-39963

Serendipity is a PHP-powered weblog engine. In versions 2.6-beta2 and below, the serendipity_setCookie() function in include/functions_config.inc.php uses $_SERVER['HTTP_HOST'] without validation as the domain parameter of setcookie(). An attacker who can influence the Host header at login time, such as via MITM, reverse proxy misconfiguration, or load balancer manipulation, can force authentication cookies including session tokens and auto-login tokens to be scoped to an attacker-controlled domain. This enables session fixation, token leakage to attacker-controlled infrastructure, and privilege escalation if an admin logs in under a poisoned Host header. This issue has been fixed in version 2.6.0.

MEDIUM6.9
0.22%p13
2026-04-23
CVE-2024-39734

IBM Datacap Navigator 9.1.5, 9.1.6, 9.1.7, 9.1.8, and 9.1.9 does not set the secure attribute on authorization tokens or session cookies. Attackers may be able to get the cookie values by sending a http:// link to a user or by planting this link in a site the user goes to. The cookie will be sent to the insecure link and the attacker can then obtain the cookie value by snooping the traffic. IBM X-Force ID: 296001.

MEDIUM4.3
0.22%p12
2025-03-25
CVE-2026-8337

Concrete CMS 9.5.0 and below is vulnerable to IDOR in surveys. To be vulnerable, a site would have to be configured in such a way that both public and private surveys are present on the site. An unauthenticated attacker can vote in the restricted survey by submitting the restricted optionID through the public survey’s endpoint. The Concrete CMS security team gave this vulnerability a CVSS v.4.0 score of 6.3 with vector CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N. Thanks  Zer0daySec https://github.com/Zee99y  for reporting

MEDIUM5.3
0.19%p9
2026-05-26
CVE-2023-3747

Zero Trust Administrators have the ability to disallow end users from disabling WARP on their devices. Override codes can also be created by the Administrators to allow a device to temporarily be disconnected from WARP, however, due to lack of server side validation, an attacker with local access to the device, could extend the maximum allowed disconnected time of WARP client granted by an override code by changing the date & time on the local device where WARP is running.

MEDIUM5.5
0.18%p8
2024-11-21
CVE-2026-53871

Hermes WebUI before 0.51.368 contains an authorization bypass vulnerability in the get_profile_cookie() function that accepts unauthenticated profile names from the hermes_profile cookie. An authenticated attacker can forge the hermes_profile cookie value to bypass profile-scoped authorization checks and access sessions, files, and resources across different profiles.

HIGH8.1no EPSS
2026-06-18