VDB
CVE-2026-73212
CVE-2026-73212
PUBLISHED
CVSS 5.8 MEDIUM
Reported by GitHub_M · Published August 11, 2026
Coturn is a free open source implementation of TURN and STUN Server. Prior to 4.13.1, good_peer_addr() in src/server/ns_turn_server.c uses ioa_addr_in_range() in src/client/ns_turn_ioaddr.c without canonicalizing IPv4-compatible, 6to4, and 64:ff9b::/96 NAT64 address forms, allowing an authenticated RFC 6062 TCP CONNECT relay client to bypass an IPv4 denied-peer-ip range when the Coturn host has a useful translation route. This issue is fixed in version 4.13.1.
Risk Scores
CVSS 4.0
5.8
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| coturn | coturn | < 4.13.1 |
| coturn | coturn | < 4.13.1 |
Timeline
- Aug 11, 2026 CVE Published
- Aug 11, 2026 CVE Updated
- Aug 12, 2026 Coalition ESS Score
- Aug 15, 2026 Security Advisory
- Aug 24, 2026 EPSS Score
- Aug 28, 2026 EPSS Score
- Sep 4, 2026 EPSS Score
- Sep 9, 2026 EPSS Score
- Sep 12, 2026 EPSS Score
- Sep 16, 2026 EPSS Score
- Sep 18, 2026 EPSS Score
- Sep 24, 2026 EPSS Score
References
- https://github.com/coturn/coturn/security/advisories/GHSA-2x4g-wx24-48m4 x_refsource_CONFIRM
- https://github.com/coturn/coturn/pull/1945 x_refsource_MISC
- https://github.com/coturn/coturn/pull/1947 x_refsource_MISC
- https://github.com/coturn/coturn/commit/cf4b4952de48510d38415b96300da5fc674bfdda x_refsource_MISC
- https://github.com/coturn/coturn/commit/d49ee56aa9fe748af064853d5e430eec1ccc3cbc x_refsource_MISC
- https://github.com/coturn/coturn/releases/tag/4.13.1 x_refsource_MISC