{"cve":"CVE-2026-54069","nvd":{"published":"2026-06-24T22:16:48.433","modified":"2026-10-25T23:10:00.167","status":"Deferred","description":"SiYuan is an open-source personal knowledge management system. Prior to 3.7.0, SiYuan Note's kernel HTTP server unconditionally trusts all chrome-extension:// origins, granting RoleAdministrator access to every installed browser extension without any authentication. Combined with the default empty AccessAuthCode on desktop installs, any Chrome/Chromium extension -- including a compromised legitimate extension via supply chain attack -- can make fully authenticated admin API calls to the SiYuan kernel at 127.0.0.1:6806, enabling data exfiltration, stored XSS injection, and configuration tampering. This vulnerability is fixed in 3.7.0.","cvss_v4":{"vector":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","score":9.2},"cvss_v3":null,"cwes":["CWE-346"],"references":["https://github.com/siyuan-note/siyuan/security/advisories/GHSA-hvr9-72v2-fff3","https://github.com/siyuan-note/siyuan/security/advisories/GHSA-hvr9-72v2-fff3"],"products":[],"source":"nvd","synced_at":"2026-10-25T23:44:33.281319194+00:00"},"epss":{"cve":"CVE-2026-54069","score":0.00579,"percentile":0.47377,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-hvr9-72v2-fff3","url":"https://osv.dev/vulnerability/GHSA-hvr9-72v2-fff3","summary":"SiYuan: Unauthenticated Admin API Access via Blanket chrome-extension:// Origin Allowlist","modified":"2026-07-21T19:18:53.216341280Z","packages":[{"ecosystem":"Go","name":"github.com/siyuan-note/siyuan/kernel","purl":"pkg:golang/github.com/siyuan-note/siyuan/kernel","ranges":["<0.0.0-20260628153353-2d5d72223df4"],"fixed":["0.0.0-20260628153353-2d5d72223df4"]}]},{"id":"GO-2026-5961","url":"https://osv.dev/vulnerability/GO-2026-5961","summary":"SiYuan: Unauthenticated Admin API Access via Blanket chrome-extension:// Origin Allowlist in github.com/siyuan-note/siyuan/kernel","modified":"2026-07-21T19:15:34.511584285Z","packages":[{"ecosystem":"Go","name":"github.com/siyuan-note/siyuan/kernel","purl":"pkg:golang/github.com/siyuan-note/siyuan/kernel","ranges":["<0.0.0-20260628153353-2d5d72223df4"],"fixed":["0.0.0-20260628153353-2d5d72223df4"]}]}],"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."]}