CVE-2022-1212

9.8 criticalEPSS 1.8%

Critical (9.8) in mruby mruby. EPSS 1.8% chance of exploitation in the next 30 days.

Use-After-Free in str_escape in mruby/mruby in GitHub repository mruby/mruby prior to 3.2. Possible arbitrary code execution if being exploited.

Severity

9.8 critical

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS: 1.8% chance of exploitation in the next 30 days; higher than 78% of CVEs (scores of 2026-10-31)
CWE: CWE-416
Published: 2022-04-05
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19