Threat actors
Ukrainian Cyber Alliance
ransomwareUAvia MISP
1 CVE attributed
Aliases1
UCA
Cyber Alliance is a hacktivist group that has demonstrated capabilities in exploiting vulnerabilities, such as CVE-2023-22515 in Confluence, to escalate privileges and access targeted infrastructure. They successfully accessed Trigona's systems, exfiltrating sensitive data and ultimately defacing and deleting the organization's site.
Attributed CVEs1
| CVE | Description | Severity | EPSS | Flags | Modified |
|---|---|---|---|---|---|
| CVE-2023-22515 | Atlassian has been made aware of an issue reported by a handful of customers where external attackers may have exploited a previously unknown vulnerability in publicly accessible Confluence Data Center and Server instances to create unauthorized Confluence administrator accounts and access Confluence instances. Atlassian Cloud sites are not affected by this vulnerability. If your Confluence site is accessed via an atlassian.net domain, it is hosted by Atlassian and is not vulnerable to this issue. | CRITICAL9.8 | 100%p100 | KEV+RWeaponized | 2026-03-25 |