CVE-2026-53449: Coturn: Arbitrary File Write via CLI psd Command
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.
Affected Software
Remediation
Event History
Frequently Asked Questions
What is the severity of CVE-2026-53449?
CVE-2026-53449 has a medium severity rating of 6.
How do I fix CVE-2026-53449?
To fix CVE-2026-53449, update Coturn to version 4.13.0 or later.
What exploitation vector does CVE-2026-53449 utilize?
CVE-2026-53449 can be exploited by an authenticated admin with CLI access to the Coturn server.
What kind of vulnerability is described in CVE-2026-53449?
CVE-2026-53449 is an arbitrary file write vulnerability.
What could an attacker achieve by exploiting CVE-2026-53449?
An attacker could overwrite arbitrary files that are writable by the Coturn server.