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.
- Score
- CVSS 3.1 8.1 High
- Status
- Deferred - disclosure@vulncheck.com
- Published
- 2026-10-25
- Last modified
- 2026-10-25
- Weaknesses
- CWE-862
Affected products
References
- 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
