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Advisories

YesWiki from 4.6.2 before 4.7.0 HTTP Signature Replay via ActivityPub Inbox

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Severity
high
Date
Affecting

  • yeswiki >= 4.6.2, < 4.7.0

CWE
  • CWE-294 Authentication Bypass by Capture-replay
CVSS
8.3
CVSS V4 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
Credit
manus-pi, manus-use
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.

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