CVE-2026-116825— YesWiki from 4.6.2 before 4.7.0 HTTP Signature Replay via ActivityPub Inbox

Quick assessment

Affected

YesWiki yeswiki

Exploitation

No confirmed in-the-wild exploitation; assess based on exposure

Recommended action

Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 YesWiki 4.6.2 至 4.7.0（不含）的版本中，方法缺乏重放攻击防护机制：该方法既不会验证 HTTP 请求中的请求头，也不会记录已见过的签名。攻击者若截获了发往端点的已签名请求，便可在后续重放该请求，从而再次执行删除（Delete）、更新（Update）、关注（Follow）或撤销（Undo）等操作。

CVSS 6.5 · Medium Updated Oct 27, 2026

Possible ATT&CK Techniques 2 AI

T1055 · Process Injection T1190 · Exploit Public-Facing Application

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Vulnerability Information

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Vulnerability Title

YesWiki from 4.6.2 before 4.7.0 HTTP Signature Replay via ActivityPub Inbox

Source: CVE Program / CVE List V5

Vulnerability 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.

Source: CVE Program / CVE List V5

CVSS Information

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:L

Source: CVE Program / CVE List V5

Vulnerability Type

使用捕获-重放进行的认证绕过

Source: CVE Program / CVE List V5

Affected Products

Vendor	Product	Affected Versions	CPE	Subscribe
YesWiki	yeswiki	4.6.2 ~ 4.7.0	-

II. Public POCs for CVE-2026-116825

#	POC Description	Source Link	Shenlong Link

AI-Generated POC Premium

No public POC found.

III. Intelligence Information for CVE-2026-116825

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Other References for CVE-2026-116825 (2)

https://github.com/YesWiki/yeswiki/security/advisories/GHSA-7m9j-h553-397x vendor-advisory
https://www.vulncheck.com/advisories/yeswiki-from-4.6.2-before-4.7.0-http-signature-replay-via-activitypub-inbox third-party-advisory

https://www.cve.org/CVERecord?id=CVE-2026-116825

Same Patch Batch · YesWiki · 2026-10-26 · 9 CVEs total

CVE-2026-116827	6.8 MEDIUM	YesWiki before 4.7.0 SSRF via copyUrlToLocalFile in Bazar CSV Import
CVE-2026-116826	6.8 MEDIUM	YesWiki before 4.7.0 Authenticated SSRF via Page Duplication API downloadFile
CVE-2026-116821	6.5 MEDIUM	YesWiki before 4.7.0 Read-ACL Bypass via SQL LIKE Wildcards in Usernames
CVE-2026-116823	6.1 MEDIUM	YesWiki before 4.7.0 Reflected XSS via BazarField $_REQUEST Fallback
CVE-2026-116824	6.1 MEDIUM	YesWiki before 4.7.0 Stored XSS via Referer Header in referrers_sites Handler
CVE-2026-116822	5.3 MEDIUM	YesWiki before 4.7.0 Template Traversal via BazarListeAction template Parameter
CVE-2026-116820	5.3 MEDIUM	YesWiki from 4.6.0 before 4.7.0 SQL Query Disclosure via showreq Parameter
CVE-2026-116828	4.9 MEDIUM	YesWiki before 4.7.0 SQL Injection via despam.php INTERVAL operand

IV. Related Vulnerabilities

Same product: yeswiki

Same vendor: YesWiki

Same weakness: CWE-294