CVE-2026-53449CWE-73

Coturn: Arbitrary File Write via CLI psd Command

Medium · published July 10, 2026

CVSS v3.1
6.0
EPSS
0%
Percentile
10.2
In the wild
Unconfirmed
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.

The record
Technical detail
CVSS v3.1
6.0 · MEDIUM
Vector
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00207 · 10.2th percentile
Weakness
CWE-73 · External Control of File Name or Path
Published
2026-07-10T17:59Z
EPSS history
Timeline
  • 10 JUL 17:59Z
    Coturn: Arbitrary File Write via CLI psd Command
    cvelistv5