{"id":"CVE-2026-68586","aliases":["GHSA-36v8-mpjm-8j5r","GO-2026-6379"],"url":"https://o3.security/vulnerability/CVE-2026-68586","summary":"SiYuan before v3.7.3 Content Disclosure via getBacklinkDoc","details":"SiYuan before v3.7.3 fails to apply publish-access filters to the getBacklinkDoc and getBackmentionDoc content endpoints (/api/ref/getBacklinkDoc and /api/ref/getBackmentionDoc). While the corresponding backlink list endpoints filter publish-forbidden documents, the content endpoints (gated only by CheckAuth) do not. A publish-mode reader — including an anonymous reader when publish Basic Auth is disabled — can call these endpoints directly with a publish-forbidden document's ID to retrieve its rendered DOM content and to determine whether the document references a given block (a reference-existence oracle).","published":"2026-08-03T13:20:37.841Z","modified":"2026-09-10T15:25:41.235385903Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Go","name":"github.com/siyuan-note/siyuan/kernel","fixedVersion":"0.0.0-20260721014413-f45749a7ef6e"}],"fix":null,"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68586.json"},{"type":"ADVISORY","url":"https://github.com/siyuan-note/siyuan/security/advisories/GHSA-36v8-mpjm-8j5r"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-68586"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/siyuan-before-content-disclosure-via-getbacklinkdoc"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-09-10T15:25:41.235385903Z"}}