CVE-2026-68555

A flaw was found in Coturn. An authenticated user can exploit a vulnerability in the mobility feature when it is enabled. By repeatedly initiating and resuming allocations without completing the handoff process, the server's session management is bypassed. This allows the attacker to retain an...

EUVD-2026-63080

Coturn is a free open source implementation of TURN and STUN Server. In 4.15.0, an authenticated TURN user can repeatedly resume one allocation from fresh UDP 5-tuples without completing a handoff when the server enables --mobility. mobilebegintransition in src/server/nsturnserver.c disarms each...

CVE-2026-68555 coturn: Chained mobility resumes allow authenticated remote memory exhaustion

Coturn is a free open source implementation of TURN and STUN Server. In 4.15.0, an authenticated TURN user can repeatedly resume one allocation from fresh UDP 5-tuples without completing a handoff when the server enables --mobility. mobilebegintransition in src/server/nsturnserver.c disarms each...

CVE-2026-68555

Coturn 4.15.0 (open-source TURN/STUN server) is vulnerable to authenticated remote memory exhaustion when the --mobility flag is enabled. An authenticated TURN user can repeatedly resume a single allocation from fresh UDP 5-tuples without completing a handoff. The root cause is in mobile_begin_tr...

CVE-2026-68555 coturn: Chained mobility resumes allow authenticated remote memory exhaustion

Coturn is a free open source implementation of TURN and STUN Server. In 4.15.0, an authenticated TURN user can repeatedly resume one allocation from fresh UDP 5-tuples without completing a handoff when the server enables --mobility. mobilebegintransition in src/server/nsturnserver.c disarms each...

CVE-2026-73216

A flaw was found in coturn. An authenticated client can exploit a vulnerability in the shutdownclientconnection function, which prematurely releases bandwidth accounting during the first stage of closing a mobility-enabled allocation. This allows the client to bypass user and total quotas, leadin...

CVE-2026-65981

A flaw was found in Coturn, an open-source implementation of TURN and STUN servers. An authenticated attacker who obtains a victim's MOBILITY-TICKET can exploit this vulnerability during a session resume. This allows the attacker to take over the victim's TURN Traversal Using Relays around NAT...

CVE-2026-73216

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,...

UBUNTU-CVE-2026-73216

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,...

CVE-2026-73216

CVE-2026-73216 affects Coturn (TURN/STUN server). Before 4.17.0, shutdown_client_connection() in src/server/ns_turn_server.c prematurely calls dec_quota() and releases bandwidth accounting during the first-stage close of a mobility-enabled allocation, while preserving allocation, relay socket, se...

CVE-2026-73216 coturn: mobility disconnects bypass allocation quotas and exhaust relay capacity

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,...

EUVD-2026-56825

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,...

CVE-2026-73216 coturn: mobility disconnects bypass allocation quotas and exhaust relay capacity

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,...

PT-2026-70831

Coturn is a free open source implementation of TURN and STUN Server. Prior to 4.17.0, shutdown client connection in src/server/ns turn server.c prematurely calls dec quota and releases bandwidth accounting during the first-stage close of a mobility-enabled allocation while preserving the...

Linux Distros Unpatched Vulnerability : CVE-2026-65981

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Coturn is a free open source implementation of TURN and STUN Server. Prior to 4.15.0, a server using --mobility authenticates a resumed REFRESH request with the...

CVE-2026-65981

Coturn is a free open source implementation of TURN and STUN Server. Prior to 4.15.0, a server using --mobility authenticates a resumed REFRESH request with the resuming user's credentials but does not verify that identity against the original allocation owner, allowing an authenticated attacker...

DEBIAN-CVE-2026-65981

Coturn is a free open source implementation of TURN and STUN Server. Prior to 4.15.0, a server using --mobility authenticates a resumed REFRESH request with the resuming user's credentials but does not verify that identity against the original allocation owner, allowing an authenticated attacker...

UBUNTU-CVE-2026-65981

Coturn is a free open source implementation of TURN and STUN Server. Prior to 4.15.0, a server using --mobility authenticates a resumed REFRESH request with the resuming user's credentials but does not verify that identity against the original allocation owner, allowing an authenticated attacker...

CVE-2026-65981 Coturn: MOBILITY-TICKET session-resume authorization bypass allows cross-user TURN allocation takeover

Coturn is a free open source implementation of TURN and STUN Server. Prior to 4.15.0, a server using --mobility authenticates a resumed REFRESH request with the resuming user's credentials but does not verify that identity against the original allocation owner, allowing an authenticated attacker...

CVE-2026-65981 Coturn: MOBILITY-TICKET session-resume authorization bypass allows cross-user TURN allocation takeover

Coturn is a free open source implementation of TURN and STUN Server. Prior to 4.15.0, a server using --mobility authenticates a resumed REFRESH request with the resuming user's credentials but does not verify that identity against the original allocation owner, allowing an authenticated attacker...