What’s Vulnerable › Vulnerabilities

CVE-2022-0240: NULL Pointer Dereference in mruby/mruby

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.0% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2022-01-17 · updated 2026-06-17
• Weakness: CWE-476

Description

mruby is vulnerable to NULL Pointer Dereference

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/31fa3304049fc406a201a72293cce140f0557dca
• https://huntr.dev/bounties/5857eced-aad9-417d-864e-0bdf17226cbb
• https://github.com/mruby/mruby/commit/31fa3304049fc406a201a72293cce140f0557dca
• https://huntr.dev/bounties/5857eced-aad9-417d-864e-0bdf17226cbb

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