CVE-2026-53448

Coturn is a free open source implementation of TURN and STUN Server. Prior to 4.12.0, the coturn HTTPS admin panel passes HTTP query parameters directly into SQL queries via snprintf string interpolation without sanitization. The is_secure_string filter that protects the STUN protocol path is not applied to the admin panel's delete-user, delete-secret, and delete-IP operations, so an authenticated admin can inject arbitrary SQL through the du, ds, and dip parameters, gaining full database control and potentially OS-level access via PostgreSQL COPY TO PROGRAM. This issue is fixed in version 4.12.0.

• CWE-89

• https://github.com/coturn/coturn/commit/b84dbab1d1aa6e2bf0211a1cdbb250d6de2a0d09Patch
• https://github.com/coturn/coturn/pull/1924Issue Tracking, Patch
• https://github.com/coturn/coturn/releases/tag/4.12.0Release Notes
• https://github.com/coturn/coturn/security/advisories/GHSA-v8hj-2xx7-xmp5Exploit, Vendor Advisory
• https://github.com/coturn/coturn/security/advisories/GHSA-v8hj-2xx7-xmp5Exploit, Vendor 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.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
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