CVE-2026-53449

What it is

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.

At a glance

Exploitability

Can be exploited locally on the machine with an admin-level account. High risk of data tampering, service disruption.

Exploit odds

0.2% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2026-07-10 19:17 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-07-16 13:30 UTC Last updatedMost recent change to the record

Details

Published

2026-07-10 19:17 UTC

Last modified

2026-07-16 13:30 UTC

Exploit probability

0.2% · EPSS, next 30 days

Weakness

CWE-73

Record status

Analyzed

Affected

• Coturn Project Coturn < 4.13.0

Attack profile CVSS 3.1 · 6.0

Attack vector

Local

Complexity

Low

Privileges needed

High

User interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

High