Vulnerability in Yeswiki
CVE-2026-116825
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:L.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/YesWiki/yeswiki/security/advisories/GHSA-7m9j-h553-397x (vendor-advisory)
- www.vulncheck.com/advisories/yeswiki-from-4.6.2-before-4.7.0-http-signature-rep… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-116825?
- CVE-2026-116825 is a medium-severity vulnerability in Yeswiki, classified under Authentication Bypass by Capture-replay. CVSS score: 6.5/10. Published 2026-10-27.
- How severe is CVE-2026-116825?
- Medium severity. CVSS v3 base score is 6.5 out of 10.