{"cve":"CVE-2026-62204","nvd":{"published":"2026-08-22T13:16:39.547","modified":"2026-10-12T16:10:00.220","status":"Deferred","description":"SiYuan versions before v3.7.4 fail to validate that packageName matches the downloaded package content in bazaar install endpoints. Attackers with same-origin access can overwrite existing trusted plugins by supplying mismatched packageName and repoURL parameters, achieving persistence across application restarts.","cvss_v4":{"vector":"CVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:P/VC:L/VI:H/VA:L/SC:L/SI:H/SA:L","score":5.9},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:L/I:H/A:L","score":6.6},"cwes":["CWE-345"],"references":["https://github.com/siyuan-note/siyuan/security/advisories/GHSA-rpx2-p6hp-x5gj","https://www.vulncheck.com/advisories/siyuan-before-plugin-overwrite-via-bazaar-install"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:49:38.260478770+00:00"},"epss":{"cve":"CVE-2026-62204","score":0.00094,"percentile":0.00571,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-rpx2-p6hp-x5gj","url":"https://osv.dev/vulnerability/GHSA-rpx2-p6hp-x5gj","summary":"SiYuan: Missing consistency check between packageName and repoURL/repoHash in bazaar package install allows overwriting an existing, trusted plugin","modified":"2026-10-23T18:45:08.585065959Z","packages":[{"ecosystem":"Go","name":"github.com/siyuan-note/siyuan/kernel","purl":"pkg:golang/github.com/siyuan-note/siyuan/kernel","ranges":["<0.0.0-20260808010544-26ccb40d390e"],"fixed":["0.0.0-20260808010544-26ccb40d390e"]}]}],"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."]}