CVE-2026-43915

published 2026-06-18

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…

Priority P4 27 medium 5.4 CVSS 3.1

AV N AC L PR L UI R S C C L I L A N

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.

Affected

2 ranges

Vendor	Product	Version range	Fixed in
coturn	coturn	< 4.11.0	4.11.0
coturn_project	coturn	< 4.11.0	4.11.0

CVSS provenance

nvd v3.1 5.4 MEDIUM CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

vendor_redhat 5.4 MEDIUM

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CWE-79