The cluster was running coturn 4.10.0 while :latest pointed at 4.17.2, which is
the concrete harm the issue describes: nobody knew what ran, a reschedule would
have jumped seven minor versions unannounced, and the CVE scan was measuring a
moving target. Now pinned to 4.17.2 and verified beyond 'the pod is up' — a STUN
binding request from the public internet succeeds and the server reports the
caller's external address, so the relay path itself is proven.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>