CVE-2026-116825

YesWiki from 4.6.2 before 4.7.0 HTTP Signature Replay via ActivityPub Inbox

State: Published
Severity: 8.3 High
Published: Oct 26, 2026
Updated: Oct 26, 2026
Reserved: Oct 26, 2026

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.

Scores

CVSS	Score	Vector	Source
4.0	8.3 High	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	VulnCheck
3.1	6.5 Medium	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:L	VulnCheck

Weaknesses

CWE-294 Authentication Bypass by Capture-replay

Affected Products

Product	Versions
yeswikiYesWiki	4.6.2 to before 4.7.0Affected 4.7.0Not affected

References

GitHub Security Advisory (GHSA-7m9j-h553-397x)vendor-advisory
VulnCheck Advisory: YesWiki from 4.6.2 before 4.7.0 HTTP Signature Replay via ActivityPub Inboxthird-party-advisory

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