Fedify 1.6.8
Released on August 8, 2025.
- Fixed a critical authentication bypass vulnerability in the inbox handler that allowed unauthenticated attackers to impersonate any ActivityPub actor. The vulnerability occurred because activities were processed before verifying that the HTTP Signatures key belonged to the claimed actor. Now authentication verification is performed before activity processing to prevent actor impersonation attacks. [CVE-2025-54888]