CVE-2026-53450

The CVE-2026-53450 entry affects Coturn (TURN/STUN server). A defect in prior releases (

CVE-2026-53450 Coturn: IPv4-mapped 127.0.0.1 bypasses default loopback peer protection

Coturn is a free open source implementation of TURN and STUN Server. Prior to 4.13.0, coturn rejects loopback peers by default unless allow-loopback-peers is enabled, but the default loopback guard can be bypassed by using the IPv4-mapped IPv6 peer address ::ffff:127.0.0.1 in a TURN...

PT-2021-4479 · Restund · Restund

Name of the Vulnerable Software and Affected Versions: Restund affected versions not specified Description: The issue is related to the Restund TURN server, which can be instructed to open a relay to the loopback address range, potentially exposing private services running on localhost. An attack...

Updated coturn package fixes a security vulnerability

When sending a CONNECT request with the XOR-PEER-ADDRESS value of 0.0.0.0, a malicious user would be able to relay packets to the loopback interface. Additionally, when coturn is listening on IPv6, which is default, the loopback interface can also be reached by making use of either ::1 or :: as t...

PT-2020-5861

Name of the Vulnerable Software and Affected Versions: Coturn versions prior to 4.5.2 Description: The issue is related to incorrect input validation in Coturn, a free open source implementation of TURN and STUN Server. By sending a CONNECT request with the XOR-PEER-ADDRESS value of 0.0.0.0, a...