CVE-2026-53449

Coturn is a free open source implementation of TURN and STUN Server. Prior to 4.13.0, the psd print sessions dump CLI command in coturn takes a filename argument and directly passes it to fopen with no path validation. An authenticated admin with CLI access can overwrite arbitrary files writable by the coturn process because the command string is used as-is after stripping the psd prefix and leading spaces, allowing truncation and overwrite with session dump data. This issue is fixed in version 4.13.0.

• CWE-73

• https://github.com/coturn/coturn/commit/e72930f571beba3bc7a9f97661af2614aae92a55Patch
• https://github.com/coturn/coturn/releases/tag/4.13.0Release Notes
• https://github.com/coturn/coturn/security/advisories/GHSA-jj76-vwjw-w34rExploit, Third Party Advisory
• https://github.com/coturn/coturn/security/advisories/GHSA-jj76-vwjw-w34rExploit, Third Party Advisory

Published

Jul 10, 2026

Last Modified

Jul 16, 2026

Status

Analyzed

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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