{"cve":"CVE-2026-68586","nvd":{"published":"2026-08-03T14:16:28.237","modified":"2026-10-23T21:10:00.157","status":"Deferred","description":"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).","cvss_v4":{"vector":"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","score":9.2},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N","score":8.6},"cwes":["CWE-862"],"references":["https://github.com/siyuan-note/siyuan/security/advisories/GHSA-36v8-mpjm-8j5r","https://www.vulncheck.com/advisories/siyuan-before-content-disclosure-via-getbacklinkdoc"],"products":[],"source":"nvd","synced_at":"2026-10-24T16:53:34.184483516+00:00"},"epss":{"cve":"CVE-2026-68586","score":0.00409,"percentile":0.34893,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-36v8-mpjm-8j5r","url":"https://osv.dev/vulnerability/GHSA-36v8-mpjm-8j5r","summary":"SiYuan: Cross-boundary content disclosure via getBacklinkDoc/getBackmentionDoc (publish mode): reader-reachable rendered DOM of publish-forbidden docs; sibling list endpoints are filtered","modified":"2026-09-10T15:25:41.235385903Z","packages":[{"ecosystem":"Go","name":"github.com/siyuan-note/siyuan/kernel","purl":"pkg:golang/github.com/siyuan-note/siyuan/kernel","ranges":["<0.0.0-20260721014413-f45749a7ef6e"],"fixed":["0.0.0-20260721014413-f45749a7ef6e"]}]},{"id":"GO-2026-6379","url":"https://osv.dev/vulnerability/GO-2026-6379","summary":"SiYuan: Cross-boundary content disclosure via getBacklinkDoc/getBackmentionDoc (publish mode): reader-reachable rendered DOM of publish-forbidden docs; sibling list endpoints are filtered in github.com/siyuan-note/siyuan/kernel","modified":"2026-09-10T15:15:14.105021431Z","packages":[{"ecosystem":"Go","name":"github.com/siyuan-note/siyuan/kernel","purl":"pkg:golang/github.com/siyuan-note/siyuan/kernel","ranges":["<0.0.0-20260721014413-f45749a7ef6e"],"fixed":["0.0.0-20260721014413-f45749a7ef6e"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}