Medium [CVE-2026-53449] Arbitrary file overwrite via CLI command
This medium-severity Red Hat Linux advisory covers CVE-2026-53449.
Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.
VulniPulse record published Record updated
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 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.
An authenticated administrator with command-line interface (CLI) access could exploit a vulnerability in the `psd print sessions dump` command. This flaw allows the administrator to overwrite arbitrary files on the system that are writable by the Coturn process, potentially leading to data corruption or denial of service.
This flaw affects the community-maintained coturn TURN/STUN server as shipped in Fedora and EPEL. Red Hat does not ship coturn in any core Red Hat product.
Fedora and EPEL currently ship coturn 4.14.0, which already includes the fix released in 4.13.0, so the shipped builds are not vulnerable to this arbitrary file overwrite via the CLI psd command. Red Hat severity: Moderate — CVSS 6 (CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H).
Weakness: CWE-22.
Is CVE-2026-53449 exploited?
No exploitation is reported in the sources VulniPulse tracks: CVE-2026-53449 is not in the CISA KEV catalog (checked ) and this advisory does not report exploitation. That is not proof the vulnerability cannot be exploited.
How do I fix CVE-2026-53449?
Upgrade to a fixed release named by Red Hat:
- 4.13.0
Confirm against the vendor advisory before you patch.
- < 4.13.0
Official advisory · high-confidence parse· fetched 5 days ago·verify at source
Mitigation checklist
- No action needed — the shipped coturn build (4.14.0) already contains the upstream fix.
Official advisory · high-confidence parse· fetched 5 days ago·verify at source
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