CVE-2026-53449: Coturn is a free open source implementation of TURN and STUN Server

Q: How do I fix CVE-2026-53449?

coturn: upgrade to 4.13.0. Exact commands for each OS are on this page.

Q: Is CVE-2026-53449 being exploited?

CVE-2026-53449 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-53449 affect?

CVE-2026-53449 affects coturn. Severity is medium (CVSS 6.0). 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 admi

Q: How urgent is CVE-2026-53449?

Priority 29/100. Public exploit reference

Routine

MEDIUM 6.0UPGRADE

CVE-2026-53449 is a medium-severity flaw (CVSS 6.0) affecting coturn. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	6.0 (Medium)
Attack vector	Local
Attack complexity	Low
Privileges needed	High
User interaction	None
EPSS exploit chance	0.2% (top 89%)
CISA exploited list	No
Weakness	CWE-73
Published	2026-07-10
Last modified	2026-07-16

Publisher (CNA): GitHub, Inc. · Vendor: coturn project

Last updated 2026-07-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-07-10 19:17 UTCPublished CVE record published
2026-07-16 13:30 UTCUpdated Record last modified

coturn project coturn UPGRADE

Affected: < 4.13.0

Fixed in: 4.13.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy coturn || rpm -q coturn || coturn --version

2. UPGRADE to 4.13.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade coturn

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade coturn

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-53449?

coturn: upgrade to 4.13.0. Exact commands for each OS are on this page.

Is CVE-2026-53449 being exploited?

CVE-2026-53449 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-53449 affect?

CVE-2026-53449 affects coturn. Severity is medium (CVSS 6.0). 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 admi

How urgent is CVE-2026-53449?

Priority 29/100. Public exploit reference

Related CVEs

CVE-2026-53450 HIGH 7.4 UPGRADE Coturn is a free open source implementation of TURN and STUN Server
CVE-2026-53448 HIGH 7.2 UPGRADE Coturn is a free open source implementation of TURN and STUN Server

References

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