{"action":"No fix published. Pin and monitor.","affected":[{"introduced":"0"}],"component":"github.com/siyuan-note/siyuan/kernel","cve_ids":["CVE-2026-25539"],"ecosystem":"Go","epss":0.01105,"exploited":false,"fixed_versions":[],"ghsa_id":"GHSA-c4jr-5q7w-f6r9","id":"tcs_01M5KF6PF6J0NGGGZT6DTANN0E","modified_at":"2026-02-05T08:07:46.144273Z","published_at":"2026-01-29T15:15:54Z","references":["https://osv.dev/vulnerability/GHSA-c4jr-5q7w-f6r9","https://github.com/siyuan-note/siyuan/security/advisories/GHSA-c4jr-5q7w-f6r9","https://nvd.nist.gov/vuln/detail/CVE-2026-25539","https://github.com/siyuan-note/siyuan/commit/d7f790755edf8c78d2b4176171e5a0cdcd720feb","https://github.com/siyuan-note/siyuan"],"severity":{"label":"critical","score":9.1},"sources":[{"source":"osv","source_id":"GHSA-c4jr-5q7w-f6r9","url":"https://osv.dev/vulnerability/GHSA-c4jr-5q7w-f6r9"}],"summary":"SiYuan has Arbitrary File Write via /api/file/copyFile leading to RCE"}