CVE-2026-68554: Insufficient Verification of Data Authenticity

Coturn is a free open source implementation of TURN and STUN Server. Prior to 4.15.0, an on-path attacker can append attributes after MESSAGE-INTEGRITY to an authenticated STUN request on plain UDP or TCP, adjust the STUN header length, and recompute the unkeyed FINGERPRINT while the original HMA...

CVE-2026-73212: Improper Access Control

Coturn is a free open source implementation of TURN and STUN Server. Prior to 4.13.1, goodpeeraddr in src/server/nsturnserver.c uses ioaaddrinrange in src/client/nsturnioaddr.c without canonicalizing IPv4-compatible, 6to4, and 64:ff9b::/96 NAT64 address forms, allowing an authenticated RFC 6062 T...

CVE-2026-73216: Uncontrolled Resource Consumption

Coturn is a free open source implementation of TURN and STUN Server. Prior to 4.17.0, shutdownclientconnection in src/server/nsturnserver.c prematurely calls decquota and releases bandwidth accounting during the first-stage close of a mobility-enabled allocation while preserving the allocation,...