{"id":"CVE-2026-82650","title":"SiYuan 3.8.0 contains a path traversal / sensitive file exposure vulnerability in the RenderTemplate function (kernel/model/template.go), reachable via the POST /api/template/render endpoint (kernel/api/template.go)","summary":"SiYuan 3.8.0 contains a path traversal / sensitive file exposure vulnerability in the RenderTemplate function (kernel/model/template.go), reachable via the POST /api/template/render endpoint (kernel/api/template.go). The endpoint restric…","severity":"medium","cvss":4.4,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N","cwe":["CWE-668"],"published":"2026-08-30","updated":"2026-08-30","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-82650","references":[{"url":"https://github.com/siyuan-note/siyuan/security/advisories/GHSA-9jfx-rc58-h23j","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/siyuan-before-3.8.1-path-traversal-via-api-template-render","label":"disclosure@vulncheck.com"}],"tags":["nvd"],"ingestedAt":"2026-08-30T23:59:28.657Z","epss":0.0035,"epssPercentile":0.25888,"slug":"CVE-2026-82650","body":"## Overview\n\nSiYuan 3.8.0 contains a path traversal / sensitive file exposure vulnerability in the RenderTemplate function (kernel/model/template.go), reachable via the POST /api/template/render endpoint (kernel/api/template.go). The endpoint restricts the supplied path only to the workspace directory (util.IsAbsPathInWorkspace) but, unlike the file API's refuseToAccess() blocklist, applies no sensitive-path exclusion. This allows an authenticated attacker to read sensitive workspace files, including conf/conf.json, which contains the API token and cookie signing key. The issue is fixed in v3.8.1.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":24,"depthScoreParts":{"impact":24.2,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}