Ruby Patches Onigmo Regex Bugs Behind Four Critical GitLab RCEs

Sat, 24 Oct 2026 14:29:02 +0000

Engineer — Plan: Upgrade Ruby to 4.0.9 / 3.4.12 / 3.3.13 on all services that process user-supplied input; the Onigmo memory-corruption bugs are critical RCE class but no KEV listing or public PoC is present yet, so this is urgent-queue rather than emergency patch.
SOC/IR — Skip
Leader — Plan: Confirm your GitLab instances (widely used DevOps platform) are running the patched versions that resolved these four critical RCEs; flag any Ruby-based internal services to your engineering team for expedited patching this quarter.

Ruby on CuraSec