Vulnerability Details CVE-2026-43915
Coturn is a free open source implementation of TURN and STUN Server. Versions prior to 4.11.0 contain a stored cross-site scripting (XSS) vulnerability in the web-admin HTTPS interface. An attacker who can create a TURN allocation with a crafted USERNAME value can inject HTML/JavaScript that executes when an authenticated web-admin user views the TURN session list. In configurations using anonymous TURN access (--no-auth), this may be exploitable without TURN credentials. In authenticated deployments, exploitation requires valid TURN credentials or control over a provisioned username. This issue has been fixed in version 4.11.0.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 3.8%
CVSS Severity
CVSS v3 Score 5.4
References
Products affected by CVE-2026-43915
-
cpe:2.3:a:coturn_project:coturn:4.10.0
-
cpe:2.3:a:coturn_project:coturn:4.4.5.3
-
cpe:2.3:a:coturn_project:coturn:4.4.5.4
-
cpe:2.3:a:coturn_project:coturn:4.5.0.1
-
cpe:2.3:a:coturn_project:coturn:4.5.0.2
-
cpe:2.3:a:coturn_project:coturn:4.5.0.3
-
cpe:2.3:a:coturn_project:coturn:4.5.0.4
-
cpe:2.3:a:coturn_project:coturn:4.5.0.5
-
cpe:2.3:a:coturn_project:coturn:4.5.0.6
-
cpe:2.3:a:coturn_project:coturn:4.5.0.7
-
cpe:2.3:a:coturn_project:coturn:4.5.0.8
-
cpe:2.3:a:coturn_project:coturn:4.5.0.9
-
cpe:2.3:a:coturn_project:coturn:4.5.1.0
-
cpe:2.3:a:coturn_project:coturn:4.5.1.1
-
cpe:2.3:a:coturn_project:coturn:4.5.1.2
-
cpe:2.3:a:coturn_project:coturn:4.5.1.3
-
cpe:2.3:a:coturn_project:coturn:4.5.2
-
cpe:2.3:a:coturn_project:coturn:4.6.0
-
cpe:2.3:a:coturn_project:coturn:4.6.1
-
cpe:2.3:a:coturn_project:coturn:4.6.2
-
cpe:2.3:a:coturn_project:coturn:4.6.3
-
cpe:2.3:a:coturn_project:coturn:4.7.0
-
cpe:2.3:a:coturn_project:coturn:4.8.0
-
cpe:2.3:a:coturn_project:coturn:4.9.0