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CVE PROGRAM SOURCE RECORD8.8 High

CVE-2026-104445

YesWiki before 4.6.7 Authentication Bypass via ActivityPub Inbox Actor Spoofing

Description

YesWiki before 4.6.7 contains an authentication bypass vulnerability in the ActivityPub inbox that fails to bind the verified HTTP signature signer to the activity actor. Unauthenticated attackers with any ActivityPub keypair can send signed Delete or Update activities referencing a mirrored entry's sourceUrl to delete or overwrite other actors' federated entries.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

YesWiki yeswiki

Default version status: unaffected

  • 0 to < 4.6.7affected
  • 4.6.7unaffected

References