PT-2026-78700

Name of the Vulnerable Software and Affected Versions Coturn version 4.15.0 Description An authenticated TURN user can repeatedly resume a single allocation from new UDP 5-tuples without completing a handoff when the server has the --mobility feature enabled. This occurs because the mobile begin...

PT-2026-78699

Name of the Vulnerable Software and Affected Versions Coturn versions prior to 4.15.0 Description An on-path attacker can modify authenticated STUN requests sent over plain UDP or TCP by appending attributes after the MESSAGE-INTEGRITY attribute and adjusting the STUN header length. Because the...

CVE-2026-73213

A flaw was found in Coturn. An authenticated TURN client can bypass configured IP address restrictions due to an incorrect component-wise IPv6 comparison in the addrlesseq function. This allows the client to relay traffic to an IPv6 peer that should be denied, leading to a Server-Side Request...

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-2026-73215

A flaw was found in Coturn. An authenticated client can exploit a vulnerability by sending a specially crafted 'EVEN-PORT Allocate request' with a reservation bit set to zero. This causes the server to incorrectly mark an unused port as taken, leading to the permanent exhaustion of the relay port...

CVE-2026-73214

A flaw was found in coturn. This vulnerability allows an unauthenticated remote attacker to cause a Denial of Service DoS by sending specially crafted fragmented ClientHello messages. The coturn server retains OpenSSL Datagram Transport Layer Security DTLS session state for these messages before...

Linux Distros Unpatched Vulnerability : CVE-2026-73216

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 4.17.0, shutdownclientconnection in src/server/nsturnserver.c prematurely calls...

Linux Distros Unpatched Vulnerability : CVE-2026-73215

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 4.17.0, turnportsallocateeven in src/apps/relay/turnports.c marks the unused odd...

Linux Distros Unpatched Vulnerability : CVE-2026-73214

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 4.16.0, dtlsserverinputhandler and createnewconnectedudpsocket in...

Linux Distros Unpatched Vulnerability : CVE-2026-73213

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 4.16.0, addrlesseq in src/client/nsturnioaddr.c uses a component-wise comparison f...

Linux Distros Unpatched Vulnerability : CVE-2026-73212

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 4.13.1, goodpeeraddr in src/server/nsturnserver.c uses ioaaddrinrange in...

CVE-2026-62959

A flaw was found in Coturn. When configured with ACME redirect and a plaintext-TCP listener, an unauthenticated remote client can send an HTTP GET request. This action can lead to the disclosure of up to approximately 870 bytes of adjacent process heap memory. On a busy server, this leaked memory...

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,...

CVE-2026-73214

Coturn is a free open source implementation of TURN and STUN Server. Prior to 4.16.0, dtlsserverinputhandler and createnewconnectedudpsocket in src/apps/relay/dtlslistener.c retain OpenSSL dtls1reassemblefragment state for a 35-byte fragmented ClientHello declaring a 650,000-byte handshake before...

CVE-2026-73213

Coturn is a free open source implementation of TURN and STUN Server. Prior to 4.16.0, addrlesseq in src/client/nsturnioaddr.c uses a component-wise comparison for native IPv6 min-max intervals in ioaaddrinrange, allowing an authenticated TURN client to relay to an IPv6 peer that is numerically...

CVE-2026-73215

Coturn is a free open source implementation of TURN and STUN Server. Prior to 4.17.0, turnportsallocateeven in src/apps/relay/turnports.c marks the unused odd sibling port as TPSTAKENODD for an EVEN-PORT Allocate request with reservation bit R=0 even though no RTCP socket will release it, allowin...

CVE-2026-73215

Coturn is a free open source implementation of TURN and STUN Server. Prior to 4.17.0, turnportsallocateeven in src/apps/relay/turnports.c marks the unused odd sibling port as TPSTAKENODD for an EVEN-PORT Allocate request with reservation bit R=0 even though no RTCP socket will release it, allowin...

UBUNTU-CVE-2026-73214

Coturn is a free open source implementation of TURN and STUN Server. Prior to 4.16.0, dtlsserverinputhandler and createnewconnectedudpsocket in src/apps/relay/dtlslistener.c retain OpenSSL dtls1reassemblefragment state for a 35-byte fragmented ClientHello declaring a 650,000-byte handshake before...

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,...