What is CVE-2022-0326?

CVE-2022-0326 is a medium-severity vulnerability in Mruby, classified under NULL Pointer Dereference. CVSS score: 5.5/10. Published 2022-01-21.

How severe is CVE-2022-0326?

Medium severity. CVSS v3 base score is 5.5 out of 10.

NULL pointer dereference in Mruby

CVE-2022-0326

NULL Pointer Dereference in Homebrew mruby prior to 3.2.

Published 2022-01-21 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.008 (55.2th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 55th percentile — 55.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000

Affected products

Mruby
Mruby Mruby/mruby — versions unspecified

Weakness classification (CWE)

CWE-476 — NULL Pointer Dereference

References

huntr.dev/bounties/795dcbd9-1695-44bb-8c59-ad327c97c976 (Exploit, Patch, Third Party Advisory)
github.com/mruby/mruby/commit/b611c43a5de061ec21b343967e1b64c45c373d7e (Patch, Third Party Advisory)

Frequently asked questions

What is CVE-2022-0326?: CVE-2022-0326 is a medium-severity vulnerability in Mruby, classified under NULL Pointer Dereference. CVSS score: 5.5/10. Published 2022-01-21.
How severe is CVE-2022-0326?: Medium severity. CVSS v3 base score is 5.5 out of 10.