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CRITICAL 9.8 CVE-2026-54906 concurrent-ruby is a modern concurrency tools for Ruby. Prior to 1.3.7, Concurrent::ReadWriteLock#release_write_lock does not verify that the calling…

Concurrent Ruby 1.3.7+ Fix from $2,3002026-06-24 HIGH 7.5 CVE-2026-54904 concurrent-ruby is a modern concurrency tools for Ruby. Prior to 1.3.7, Concurrent::AtomicReference#update can enter a permanent busy retry loop when…

Concurrent Ruby 1.3.7+ Fix from $1,9502026-06-24 MEDIUM 5.5 CVE-2026-54905 concurrent-ruby is a modern concurrency tools for Ruby. Prior to 1.3.7, Concurrent::ReentrantReadWriteLock can incorrectly grant a write lock after o…

Concurrent Ruby 1.3.7+ Fix from $1,6002026-06-24