What’s Vulnerable › Vulnerabilities

CVE-2022-0631: Heap-based Buffer Overflow in mruby/mruby

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.9% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2022-02-18 · updated 2026-06-17
• Weakness: CWE-122

Description

Heap-based Buffer Overflow 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/47068ae07a5fa3aa9a1879cdfe98a9ce0f339299
• https://huntr.dev/bounties/9bdc49ca-6697-4adc-a785-081e1961bf40
• https://github.com/mruby/mruby/commit/47068ae07a5fa3aa9a1879cdfe98a9ce0f339299
• https://huntr.dev/bounties/9bdc49ca-6697-4adc-a785-081e1961bf40

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