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.
Published: 2026-10-26
Score: 8.3 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Mon, 02 Nov 2026 19:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 27 Oct 2026 04:30:00 +0000

Type Values Removed Values Added
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.
Title YesWiki from 4.6.2 before 4.7.0 HTTP Signature Replay via ActivityPub Inbox
First Time appeared Yeswiki
Yeswiki yeswiki
Weaknesses CWE-294
CPEs cpe:2.3:a:yeswiki:yeswiki:*:*:*:*:*:*:*:*
Vendors & Products Yeswiki
Yeswiki yeswiki
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:L'}

cvssV4_0

{'score': 8.3, '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'}


cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-11-02T18:47:58.288Z

Reserved: 2026-10-26T22:14:57.233Z

Link: CVE-2026-116825

cve-icon Vulnrichment

Updated: 2026-11-02T18:47:54.303Z

cve-icon NVD

Status : Deferred

Published: 2026-10-27T00:17:17.997

Modified: 2026-11-02T19:17:59.137

Link: CVE-2026-116825

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-27T08:45:14Z

Weaknesses