{"action":"No fix published. Pin and monitor.","affected":[{"introduced":"0"}],"component":"ruby-concurrent","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:12","exploited":false,"fixed_versions":[],"id":"tcs_01M5NSZS0J6CEB13B1GJRGVQJD","modified_at":"2026-10-26T11:47:34.609938533Z","published_at":"2026-06-24T17:17:29.403Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-54905","https://security-tracker.debian.org/tracker/CVE-2026-54905"],"severity":{"label":"medium","score":5.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-54905","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-54905"}],"summary":"concurrent-ruby is a modern concurrency tools for Ruby. Prior to 1.3.7, Concurrent::ReentrantReadWriteLock can incorrectly grant a write lock after one thread acquires the read lock 32,768 times. The"}