CVE-2022-1286: Mruby

Critical severity, CVSS 9.8. EPSS: 1.2% chance of exploitation in the next 30 days.

heap-buffer-overflow in mrb_vm_exec in mruby/mruby in GitHub repository mruby/mruby prior to 3.2. Possible arbitrary code execution if being exploited.

Affected products

• Mruby Mruby: before 3.2 (fixed in 3.2)

Published 2022-04-10. Last modified 2026-06-17.