What is CVE-2026-27624?

CVE-2026-27624 is a high-severity vulnerability in Coturn, classified under Improper Access Control. CVSS score: 7.2/10. Published 2026-02-25.

How severe is CVE-2026-27624?

High severity. CVSS v3 base score is 7.2 out of 10.

Vulnerability in Coturn

CVE-2026-27624

Coturn is a free open source implementation of TURN and STUN Server. Coturn is commonly configured to block loopback and internal ranges using "denied-peer-ip" and/or default loopback restrictions. CVE-2020-26262 addressed bypasses involvi…

EPSS: 0.001 (17.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N.

Affected products

Coturn — versions < 4.9.0

Weakness classification (CWE)

References

https://github.com/coturn/coturn/security/advisories/GHSA-j8mm-mpf8-gvjg (x_refsource_CONFIRM)
https://github.com/coturn/coturn/security/advisories/GHSA-6g6j-r9rf-cm7p (x_refsource_MISC)
https://github.com/coturn/coturn/commit/b80eb898ba26552600770162c26a8ae7f3661b0b (x_refsource_MISC)

Frequently asked questions

What is CVE-2026-27624?: CVE-2026-27624 is a high-severity vulnerability in Coturn, classified under Improper Access Control. CVSS score: 7.2/10. Published 2026-02-25.
How severe is CVE-2026-27624?: High severity. CVSS v3 base score is 7.2 out of 10.