What is CVE-2026-65981?

CVE-2026-65981 is a high-severity vulnerability in Coturn, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 7.1/10. Published 2026-07-31.

How severe is CVE-2026-65981?

High severity. CVSS v3 base score is 7.1 out of 10.

Auth bypass in Coturn

CVE-2026-65981

Coturn is a free open source implementation of TURN and STUN Server. Prior to 4.15.0, a server using --mobility authenticates a resumed REFRESH request with the resuming user's credentials but does not verify that identity against the orig…

Vulnerability class: IDOR (Insecure Direct Object Reference)

CVSS v3 metric

CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L.

Affected products

Coturn — versions < 4.15.0

Weakness classification (CWE)

CWE-639 — Authorization Bypass Through User-Controlled Key

References

security-advisories@github.com (x_refsource_MISC)
security-advisories@github.com (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2026-65981?: CVE-2026-65981 is a high-severity vulnerability in Coturn, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 7.1/10. Published 2026-07-31.
How severe is CVE-2026-65981?: High severity. CVSS v3 base score is 7.1 out of 10.