CVE-2026-53449
Coturn: Arbitrary File Write via CLI psd Command
Description
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.
INFO
Published Date :
July 10, 2026, 7:17 p.m.
Last Modified :
July 16, 2026, 1:30 p.m.
Remotely Exploit :
No
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Update Coturn to version 4.13.0 or later.
- Restrict CLI access to trusted administrators.
- Review file write permissions for the Coturn process.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-53449.
| URL | Resource |
|---|---|
| https://github.com/coturn/coturn/commit/e72930f571beba3bc7a9f97661af2614aae92a55 | Patch |
| https://github.com/coturn/coturn/releases/tag/4.13.0 | Release Notes |
| https://github.com/coturn/coturn/security/advisories/GHSA-jj76-vwjw-w34r | Exploit Third Party Advisory |
| https://github.com/coturn/coturn/security/advisories/GHSA-jj76-vwjw-w34r | Exploit Third Party Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-53449 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-53449
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-53449 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-53449 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Jul. 16, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:coturn_project:coturn:*:*:*:*:*:*:*:* versions up to (excluding) 4.13.0 Added Reference Type GitHub, Inc.: https://github.com/coturn/coturn/commit/e72930f571beba3bc7a9f97661af2614aae92a55 Types: Patch Added Reference Type GitHub, Inc.: https://github.com/coturn/coturn/releases/tag/4.13.0 Types: Release Notes Added Reference Type GitHub, Inc.: https://github.com/coturn/coturn/security/advisories/GHSA-jj76-vwjw-w34r Types: Exploit, Third Party Advisory Added Reference Type CISA-ADP: https://github.com/coturn/coturn/security/advisories/GHSA-jj76-vwjw-w34r Types: Exploit, Third Party Advisory -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jul. 13, 2026
Action Type Old Value New Value Added Reference https://github.com/coturn/coturn/security/advisories/GHSA-jj76-vwjw-w34r Added SSVC {'id': 'CVE-2026-53449', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'poc'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-07-13T18:23:37.703271Z'} -
New CVE Received by [email protected]
Jul. 10, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'coturn', 'product': 'coturn', 'versions': [{'status': 'affected', 'version': '< 4.13.0'}]}] Added Description 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. Added CVSS V3.1 AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H Added CWE CWE-73 Added Reference https://github.com/coturn/coturn/commit/e72930f571beba3bc7a9f97661af2614aae92a55 Added Reference https://github.com/coturn/coturn/releases/tag/4.13.0 Added Reference https://github.com/coturn/coturn/security/advisories/GHSA-jj76-vwjw-w34r