CVE-2026-53450

Name
CVE-2026-53450
Description
Coturn is a free open source implementation of TURN and STUN Server. Prior to 4.13.0, coturn rejects loopback peers by default unless allow-loopback-peers is enabled, but the default loopback guard can be bypassed by using the IPv4-mapped IPv6 peer address ::ffff:127.0.0.1 in a TURN XOR-PEER-ADDRESS attribute. ioa_addr_is_loopback checks for the literal IPv6 loopback shape before IPv4-mapped IPv6 handling, so good_peer_addr does not apply the default loopback rejection and an authenticated TURN client can expose services bound only to localhost on the coturn host through TURN relay traffic. This issue is fixed in version 4.13.0.
NVD Severity
unknown
Other trackers
CVE, NVD, CERT, CVE Details, CIRCL, Arch Linux, Debian, Red Hat, Ubuntu, Gentoo, SUSE (Bugzilla), SUSE (CVE), Mageia
Mailing lists
oss-security, full-disclosure, bugtraq
Exploits
Exploit DB, Metasploit
Forges
GitHub (code, issues), Aports (code, issues)

References

Type URI
security-advisories@github.com https://github.com/coturn/coturn/commit/b057acbebe721c8f2f202ddad5e16289e295c754
security-advisories@github.com https://github.com/coturn/coturn/security/advisories/GHSA-w4hf-cr3w-6h79

Match rules

CPE URI Source package Min version Max version
cpe:2.3:a:coturn_project:coturn:*:*:*:*:*:*:*:* coturn >= None < 4.13.0

Vulnerable and fixed packages

Source package Branch Version Maintainer Status
coturn edge-community 4.10.0-r0 wener <wenermail@gmail.com> possibly vulnerable
coturn edge-community 4.9.0-r0 wener <wenermail@gmail.com> possibly vulnerable
coturn edge-community 4.7.0-r0 wener <wenermail@gmail.com> possibly vulnerable
coturn edge-community 4.6.3-r1 wener <wenermail@gmail.com> possibly vulnerable
coturn edge-community 4.6.3-r0 wener <wenermail@gmail.com> possibly vulnerable
coturn edge-community 4.6.2-r0 wener <wenermail@gmail.com> possibly vulnerable
coturn edge-community 4.5.2-r0 Carlo Landmeter <clandmeter@alpinelinux.org> possibly vulnerable
coturn edge-community 4.5.1.3-r0 None possibly vulnerable
coturn 3.24-community 4.10.0-r0 wener <wenermail@gmail.com> possibly vulnerable