Detections
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CVE-2026-73213
medium
Description
Coturn is a free open source implementation of TURN and STUN Server. Prior to 4.16.0, addr_less_eq() in src/client/ns_turn_ioaddr.c uses a component-wise comparison for native IPv6 min-max intervals in ioa_addr_in_range(), allowing an authenticated TURN client to relay to an IPv6 peer that is numerically within a configured non-prefix-aligned denied-peer-ip range but is classified as outside it. This issue is fixed in version 4.16.0.
References
https://github.com/coturn/coturn/security/advisories/GHSA-4v97-rxjj-4f99
https://github.com/coturn/coturn/releases/tag/4.16.0
https://github.com/coturn/coturn/commit/6c13608c28a04af5d63abddd7565a0dcc4771c28