What is CVE-2026-43915?

CVE-2026-43915 is a medium-severity vulnerability in Coturn, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2026-06-18.

How severe is CVE-2026-43915?

Medium severity. CVSS v3 base score is 5.4 out of 10.

XSS in Coturn

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 c…

Vulnerability class: XSS (Cross-Site Scripting)

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

Affected products

Coturn — versions < 4.11.0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

security-advisories@github.com (x_refsource_CONFIRM)
security-advisories@github.com (x_refsource_MISC)

Frequently asked questions

What is CVE-2026-43915?: CVE-2026-43915 is a medium-severity vulnerability in Coturn, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2026-06-18.
How severe is CVE-2026-43915?: Medium severity. CVSS v3 base score is 5.4 out of 10.