Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
Coturn: Arbitrary File Write via CLI psd Command
AV AC PR UI S C I A CVSS EPSS %ile KEV
L L H N U N H H 6.0 .0024 16.1 —
AFFECTED
Product Versions Fixed
coturn < 4.13.0 – —
TIMELINE
Jun 9 Reserved by GitHub_M
Jul 10 EXPLOIT PUBLISHED — CVE-2026-53449 (coturn). Public exploit reference added.
Jul 10 Published (CNA: GitHub_M)
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.
Lifecycle
Complete event history — 3 events, chronological
| Date | Event | Detail |
| June 9, 2026 | Reserved | Reserved by GitHub_M |
| July 10, 2026 | EXPLOIT PUBLISHED | EXPLOIT PUBLISHED — CVE-2026-53449 (coturn). Public exploit reference added. |
| July 10, 2026 | Published | Published (CNA: GitHub_M) |
Affected
Affected products and packages — 1 row
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
| coturn | coturn | — | < 4.13.0 | — |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-53449 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.