CVE-2026-63095

CVE-2026-63095 affects Dendrite up to version 0.13.8. An improper authorization flaw in the Matrix Client-Server API allows any authenticated local user to delete another user’s third-party identifier (3PID) bindings by submitting an arbitrary address/medium to the account deletion endpoint witho...

CVE-2026-63095 Dendrite 0.13.8 Improper Authorization via POST account/3pid/delete Endpoint

Dendrite through 0.13.8 contains an improper authorization vulnerability in the Matrix Client-Server API that allows any authenticated local user to delete third-party identifier bindings belonging to other users by submitting an arbitrary address and medium to the account deletion endpoint witho...