What is CVE-2022-1934?

CVE-2022-1934 is a high-severity vulnerability in Mruby, classified under Use After Free. CVSS score: 7.8/10. Published 2022-05-31.

How severe is CVE-2022-1934?

High severity. CVSS v3 base score is 7.8 out of 10.

Use After Free in Mruby

CVE-2022-1934

Use After Free in GitHub repository mruby/mruby prior to 3.2.

Vulnerability class: Use-After-Free

Published 2022-05-31 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.004 (31.4th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 31st percentile — 31.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

Mruby
Mruby Mruby/mruby — versions unspecified

Weakness classification (CWE)

CWE-416 — Use After Free

References

huntr.dev/bounties/99e6df06-b9f7-4c53-a722-6bb89fbfb51f (Exploit, Patch, Third Party Advisory)
github.com/mruby/mruby/commit/aa7f98dedb68d735a1665d3a289036c88b0c47ce (Patch, Third Party Advisory)

Frequently asked questions

What is CVE-2022-1934?: CVE-2022-1934 is a high-severity vulnerability in Mruby, classified under Use After Free. CVSS score: 7.8/10. Published 2022-05-31.
How severe is CVE-2022-1934?: High severity. CVSS v3 base score is 7.8 out of 10.