{"affected":[{"defaultStatus":"unaffected","product":"yeswiki","source":"CNA: VulnCheck","vendor":"YesWiki","versions":[{"lessThan":"4.7.0","status":"affected","version":"4.6.2","versionType":"semver"},{"status":"unaffected","version":"4.7.0","versionType":"semver"}]}],"cveId":"CVE-2026-116825","cwes":["CWE-294"],"description":"YesWiki from 4.6.2 before 4.7.0 lacks replay protection in HttpSignatureService::verifySignature(), which never validates the Date header or tracks seen signatures. Attackers who capture a signed request to the /api/forms/{formId}/actor/inbox endpoint can replay it later to re-execute Delete, Update, Follow, or Undo actions.","epss":{"date":"2026-11-02","percentile":0.13228,"score":0.00225},"exploits":[{"kind":"exploit","source":"ADP: CISA-ADP","url":"https://github.com/YesWiki/yeswiki/security/advisories/GHSA-7m9j-h553-397x"}],"kev":null,"metrics":[{"score":8.3,"severity":"high","source":"CNA: VulnCheck","vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N","version":"4.0"},{"score":6.5,"severity":"medium","source":"CNA: VulnCheck","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:L","version":"3.1"}],"modifiedAt":1793645278288,"publishedAt":1793055950597,"references":[{"source":"CNA: VulnCheck","tags":["vendor-advisory"],"url":"https://github.com/YesWiki/yeswiki/security/advisories/GHSA-7m9j-h553-397x"},{"source":"CNA: VulnCheck","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/yeswiki-from-4.6.2-before-4.7.0-http-signature-replay-via-activitypub-inbox"},{"source":"ADP: CISA-ADP","tags":["exploit"],"url":"https://github.com/YesWiki/yeswiki/security/advisories/GHSA-7m9j-h553-397x"}],"remediation":[],"revision":"4e3c7ffd35eac3ad93b1f11af82385cc21c47b48b9dfacd9278859b345f6ae3c","sources":[{"modifiedAt":1793645278288,"name":"CNA: VulnCheck","retrievedAt":1793646536929,"url":"https://www.cve.org/CVERecord?id=CVE-2026-116825"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1793646541441,"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-116825"}],"ssvc":{"assessedAt":1793645262687,"automatable":"no","exploitation":"poc","source":"ADP: CISA-ADP","technicalImpact":"partial"},"status":"published","title":"YesWiki from 4.6.2 before 4.7.0 HTTP Signature Replay via ActivityPub Inbox","updatedAt":1793646541441}