EUVD-2026-63077

Coturn is a free open source implementation of TURN and STUN Server. Prior to 4.13.0, an authenticated TURN user can place printf-style format specifiers in the STUN USERNAME or REALM attribute, which passes issecurestring validation and is embedded into Redis keys at nine call sites in...

CVE-2026-68553

Coturn is a free open source implementation of TURN and STUN Server. Prior to 4.13.0, an authenticated TURN user can place printf-style format specifiers in the STUN USERNAME or REALM attribute, which passes issecurestring validation and is embedded into Redis keys at nine call sites in...

CVE-2026-68553 Coturn: Format String Injection via TURN USERNAME/REALM into hiredis Redis Command

Coturn is a free open source implementation of TURN and STUN Server. Prior to 4.13.0, an authenticated TURN user can place printf-style format specifiers in the STUN USERNAME or REALM attribute, which passes issecurestring validation and is embedded into Redis keys at nine call sites in...

CVE-2026-68553 Coturn: Format String Injection via TURN USERNAME/REALM into hiredis Redis Command

Coturn is a free open source implementation of TURN and STUN Server. Prior to 4.13.0, an authenticated TURN user can place printf-style format specifiers in the STUN USERNAME or REALM attribute, which passes issecurestring validation and is embedded into Redis keys at nine call sites in...

CVE-2026-68553

Coturn is a free open source implementation of TURN and STUN Server. Prior to 4.13.0, an authenticated TURN user can place printf-style format specifiers in the STUN USERNAME or REALM attribute, which passes issecurestring validation and is embedded into Redis keys at nine call sites in...

PT-2026-78697

Name of the Vulnerable Software and Affected Versions Coturn versions prior to 4.15.0 Description An unauthenticated remote client can send a STUN message over TCP or TLS with a body-length field between 65520 and 65532. This causes the len variable in the stun get message len str function to wra...

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-2026-68555: Uncontrolled Resource Consumption

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-2026-68554: 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-2026-68553: Use of Externally-Controlled Format String

Coturn is a free open source implementation of TURN and STUN Server. Prior to 4.13.0, an authenticated TURN user can place printf-style format specifiers in the STUN USERNAME or REALM attribute, which passes issecurestring validation and is embedded into Redis keys at nine call sites in...

CVE-2026-68552: Integer Overflow or Wraparound

Coturn is a free open source implementation of TURN and STUN Server. Prior to 4.15.0, an unauthenticated remote client can send a STUN message over TCP or TLS with a body-length field from 65520 through 65532, causing the uint16t len variable in stungetmessagelenstr in src/client/nsturnmsg.c to...

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...

[SECURITY] Fedora 44 Update: coturn-4.17.2-1.fc44

The Coturn TURN Server is a VoIP media traffic NAT traversal server and gatew ay. It can be used as a general-purpose network traffic TURN server/gateway, too. This implementation also includes some extra features. Supported RFCs: TURN specs: - RFC 5766 - base TURN specs - RFC 6062 - TCP relaying...

[SECURITY] Fedora 43 Update: coturn-4.17.2-1.fc43

The Coturn TURN Server is a VoIP media traffic NAT traversal server and gatew ay. It can be used as a general-purpose network traffic TURN server/gateway, too. This implementation also includes some extra features. Supported RFCs: TURN specs: - RFC 5766 - base TURN specs - RFC 6062 - TCP relaying...

Fedora 43 : coturn (2026-13e2cf6827)

The remote Fedora 43 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-13e2cf6827 advisory. Coturn 4.17.2 What's Changed Fix outgoing UDP TTL pinned to 1 on client-facing sockets Coturn 4.17.1 Gate merges on the more tests suites build: Dro...

Fedora 44 : coturn (2026-50c75def83)

The remote Fedora 44 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-50c75def83 advisory. Coturn 4.17.2 What's Changed Fix outgoing UDP TTL pinned to 1 on client-facing sockets Coturn 4.17.1 Gate merges on the more tests suites build: Dro...

ROS-20260817-73-0205

The vulnerability of the Coturn web server is related to access control errors. Exploiting this vulnerability could allow an attacker, operating remotely, to gain unauthorized access to protected information...

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...

SUSE CVE-2026-73212

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...

SUSE 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...