CVE-2026-53449
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.
Does this matter?
Lower severity and a low EPSS score (0.21%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 6.0 MEDIUMCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H
- EPSS
- 0.21% probability · 11th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-73
- Affected
- coturn project/coturn
- Source
- security-advisories@github.com
References
- https://github.com/coturn/coturn/commit/e72930f571beba3bc7a9f97661af2614aae92a55Patch
- https://github.com/coturn/coturn/releases/tag/4.13.0Release Notes
- https://github.com/coturn/coturn/security/advisories/GHSA-jj76-vwjw-w34rExploit, Third Party Advisory
- https://github.com/coturn/coturn/security/advisories/GHSA-jj76-vwjw-w34rExploit, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.