CVE-2022-1212

CRITICAL

Mruby < 3.0.0 - Use After Free

Title source: rule

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.

Core 2

Core References

Exploit, Issue Tracking, Patch, Third Party Advisory x_refsource_confirm

Patch, Third Party Advisory x_refsource_misc

CVSS v3 9.8

EPSS 0.0033

EPSS Percentile 55.9%

Attack Vector NETWORK

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

CWE

CWE-416

Status published

Products (2)

mruby/mruby 3.1.0 rc (2 CPE variants)

mruby/mruby < 3.0.0

Published Apr 05, 2022

Tracked Since Feb 18, 2026