CVE-2026-54904
1 advisory.
RubyGems/concurrent-ruby CVE-2026-54904: high 7.5, EPSS 0.67%
Concurrent Ruby : `AtomicReference#update` livelocks when the stored value is `Float::NAN`
Action: Upgrade concurrent-ruby to 1.3.7 or later.
bundle update concurrent-rubyAffected
| introduced | fixed | last affected |
|---|---|---|
| 0 | 1.3.7 | - |
Fixed versions
| 1.3.7 |
Sources
- osv: GHSA-h8w8-99g7-qmvj
- https://github.com/ruby-concurrency/concurrent-ruby/security/advisories/GHSA-h8w8-99g7-qmvj
- https://nvd.nist.gov/vuln/detail/CVE-2026-54904
- https://github.com/ruby-concurrency/concurrent-ruby/commit/6e37e0644b83b182971dc540d2e4bee38df61386
- https://github.com/ruby-concurrency/concurrent-ruby
- https://github.com/ruby-concurrency/concurrent-ruby/releases/tag/v1.3.7
- https://github.com/rubysec/ruby-advisory-db/blob/master/gems/concurrent-ruby/CVE-2026-54904.yml
- https://www.cve.org/CVERecord/SearchResults?query=CVE-2026-54904
CVE-2026-54904 · published · modified · JSON