CVE-2026-43915: medium-severity vulnerability in coturn
Coturn: Stored Cross-Site Scripting (XSS) in web-admin interface via TURN username
Published
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 5.4epss 0.2%
exploitation probability
0.2%top 86% of all CVEs
observed exploitation
nono source reports it
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:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Affected products
coturn · coturnRelated CVEs — coturn
In the same product, most dangerous first.
CVE-2020-4067HIGHImproper Initialization in coturnEPSS 1.9%CVE-2020-26262HIGHLoopback bypass in CoturnEPSS 1.5%CVE-2026-40613HIGHCoturn: Misaligned Memory Access in coturn STUN Attribute Parser (Remote DoS on ARM64)EPSS 1.5%CVE-2026-53448HIGHCoturn: SQL Injection in HTTPS Admin Panel Delete OperationsEPSS 0.7%CVE-2026-43994HIGHCoturn: Stack buffer overflow in decode_oauth_token_gcm()EPSS 0.7%CVE-2026-73214HIGHcoturn allocates a full per-peer SSL/session before verifying the DTLS cookie, enabling source-spoofing/botnet state-exhaustion DoSEPSS 0.6%