{"id":"GHSA-2mmh-4rf8-7xg6","summary":"Duplicate Advisory: SiYuan: Cross-boundary content disclosure via getBacklinkDoc/getBackmentionDoc (publish mode): reader-reachable rendered DOM of publish-forbidden docs; sibling list endpoints are filtered","details":"## Duplicate Advisory\n\nThis advisory has been withdrawn because it is a duplicate of GHSA-36v8-mpjm-8j5r. This link is maintained to preserve external references.\n\n## Original Description\nSiYuan 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block (a reference-existence oracle).","modified":"2026-09-03T21:30:04.313506392Z","published":"2026-08-03T15:32:47Z","withdrawn":"2026-09-03T21:21:12Z","database_specific":{"github_reviewed":true,"github_reviewed_at":"2026-09-03T21:21:12Z","nvd_published_at":"2026-08-03T14:16:28Z","cwe_ids":["CWE-862"],"severity":"CRITICAL"},"references":[{"type":"WEB","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":"WEB","url":"https://www.vulncheck.com/advisories/siyuan-before-content-disclosure-via-getbacklinkdoc"}],"affected":[{"package":{"name":"siyuan","ecosystem":"npm","purl":"pkg:npm/siyuan"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"last_affected":"3.7.2"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/08/GHSA-2mmh-4rf8-7xg6/GHSA-2mmh-4rf8-7xg6.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N"},{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"}]}