CVE-2026-56249

Capgo before 12.128.2 has an authorization bypass in the channel creation endpoint that lets authenticated users overwrite existing channels by reusing names. Attackers with app.create_channel permission can exploit a logic mismatch between existence validation and upsert operations to reassign c...

CVE-2026-56249 Capgo - Unauthorized Channel Overwrite and Ownership Takeover via POST /channel Name Collision

Capgo before 12.128.2 contains an authorization bypass vulnerability in the channel creation endpoint that allows authenticated users to overwrite existing channels by reusing their names. Attackers with app.createchannel permission can exploit a logic mismatch between existence validation and...