Vulnerability Description
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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Coturn Project | Coturn | < 4.11.0 |
Related Weaknesses (CWE)
References
- https://github.com/coturn/coturn/releases/tag/4.11.0Release Notes
- https://github.com/coturn/coturn/security/advisories/GHSA-xxf5-9vj2-g84jVendor Advisory
FAQ
What is CVE-2026-43915?
CVE-2026-43915 is a vulnerability with a CVSS score of 5.4 (MEDIUM). 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 wh...
How severe is CVE-2026-43915?
CVE-2026-43915 has been rated MEDIUM with a CVSS base score of 5.4/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-43915?
Check the references section above for vendor advisories and patch information. Affected products include: Coturn Project Coturn.