CVE-2026-116208

YesWiki from 4.6.2 before 4.7.0 contains a missing authorization vulnerability in ActivityPubService::syncActorPosts that lets malicious ActivityPub servers manipulate other actors' mirrored entries. Attackers can serve a poisoned outbox with cross-actor Delete, Update, or Create activities during admin-initiated sync to delete, overwrite, forge, or mass-delete entries.

CVSS v3 8.1 HIGH

8.1^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/YesWiki/yeswiki/security/advisories/GHSA-cr64-h6xp-9g2j
https://www.vulncheck.com/advisories/yeswiki-4.6.2-before-4.7.0-missing-authorization-in-activitypub-syncactorposts
https://github.com/YesWiki/yeswiki/security/advisories/GHSA-cr64-h6xp-9g2j

Configurations

No configuration.

History

03 Nov 2026, 17:17

Type	Values Removed	Values Added
References	~~() https://github.com/YesWiki/yeswiki/security/advisories/GHSA-cr64-h6xp-9g2j -~~	() https://github.com/YesWiki/yeswiki/security/advisories/GHSA-cr64-h6xp-9g2j -

25 Oct 2026, 14:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-25 14:17

Updated : 2026-11-03 17:17

NVD link : CVE-2026-116208

Mitre link : CVE-2026-116208

CVE.ORG link : CVE-2026-116208

JSON object : View

Products Affected

No product.

CWE

CWE-862

Missing Authorization

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