HexBrain

8x8 · Report #3889473

@jitsi/docker-jitsi-meet: `/colibri-relay-ws/` unsafe nginx regex (OCTO relay configuration)

Validstatus
lowseverity
25upvotes
25 Aug 2026disclosed

Summary

@a3z4km3 reported an unsafe nginx regex pattern in docker-jitsi-meet's /colibri-relay-ws/ location. When ENABLE_OCTO was enabled, the regex [a-zA-Z0-9-\._]+ accepted arbitrary domain names and IP addresses for proxy_pass directives, allowing unauthenticated requests to be proxied to attacker-specified destinations.

The vulnerable nginx location and associated relay WebSocket proxy configuration have been removed.

Changes:

We thank @a3z4km3 for submitting this report to us.

How it was found

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