| Name | CVE-2026-43915 |
| 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. |
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| coturn (PTS) | bullseye | 4.5.2-3 | vulnerable |
| bookworm | 4.6.1-1 | vulnerable |
| trixie | 4.6.1-2 | vulnerable |
| forky, sid | 4.15.0-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| coturn | source | (unstable) | 4.12.0-1 | | | |
Notes
[trixie] - coturn <no-dsa> (Minor issue)
[bookworm] - coturn <postponed> (Minor issue; web-admin stored XSS, is_secure_string()/raw username rendering present in 4.6.1)
https://github.com/coturn/coturn/security/advisories/GHSA-xxf5-9vj2-g84j