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:
- feat(web,jvb): remove deprecated colibri websocket support
We thank @a3z4km3 for submitting this report to us.
How it was found
The write-up for this report has not been downloaded yet, or the program disclosed it without one. Read it on HackerOne.