EUVD-2026-110532

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,...

CVE-2026-52769

YesWiki is a wiki system written in PHP. From version 4.6.2 to before version 4.6.6, the POST /api/forms/formId/actor/inbox route - exposed publicly with acl:"public" - accepts an HTTP Signature header whose keyId parameter is a URL. HttpSignatureService::verifySignature parses the header and...