---
id: CVE-2026-53449
title: Coturn is a free open source implementation of TURN and STUN Server
summary: >-
  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 a…
severity: medium
cvss: 6
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H'
cwe:
  - CWE-73
vendor: coturn_project
product: coturn
affected:
  - coturn < 4.13.0
patched:
  - coturn 4.13.0
published: '2026-07-10'
updated: '2026-07-16'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-53449'
references:
  - url: >-
      https://github.com/coturn/coturn/commit/e72930f571beba3bc7a9f97661af2614aae92a55
    label: security-advisories@github.com
  - url: 'https://github.com/coturn/coturn/releases/tag/4.13.0'
    label: security-advisories@github.com
  - url: 'https://github.com/coturn/coturn/security/advisories/GHSA-jj76-vwjw-w34r'
    label: security-advisories@github.com
  - url: 'https://github.com/coturn/coturn/security/advisories/GHSA-jj76-vwjw-w34r'
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
epss: 0.00207
epssPercentile: 0.11106
ingestedAt: '2026-07-17T13:12:08.238Z'
---

## Overview

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

- `coturn < 4.13.0`

## Remediation

Upgrade past the affected range:

- `coturn 4.13.0`