What’s Vulnerable › Vulnerabilities

CVE-2022-0623: Out-of-bounds Read in mruby/mruby

• Severity: critical (CVSS 9.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.6% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2022-02-17 · updated 2026-06-17
• Weakness: CWE-125

Description

Out-of-bounds Read in Homebrew mruby prior to 3.2.

Affected products

• mruby/mruby: before 3.2 — fixed in 3.2

How to fix

Upgrade to a fixed version: mruby/mruby 3.2. Check the vendor advisory for mitigations.

References

• https://github.com/mruby/mruby/commit/ff3a5ebed6ffbe3e70481531cfb969b497aa73ad
• https://huntr.dev/bounties/5b908ac7-d8f1-4fcd-9355-85df565f7580
• https://github.com/mruby/mruby/commit/ff3a5ebed6ffbe3e70481531cfb969b497aa73ad
• https://huntr.dev/bounties/5b908ac7-d8f1-4fcd-9355-85df565f7580

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