What’s Vulnerable › Vulnerabilities

CVE-2020-36401

• Severity: high (CVSS 7.8 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: 2021-07-01 · updated 2026-06-17
• Weakness: CWE-415

Description

mruby 2.1.2 has a double free in mrb_default_allocf (called from mrb_free and obj_free).

Affected products

• mruby/mruby: 2.1.2

References

• https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=23801
• https://github.com/google/oss-fuzz-vulns/blob/main/vulns/mruby/OSV-2020-744.yaml
• https://github.com/mruby/mruby/commit/97319697c8f9f6ff27b32589947e1918e3015503
• https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=23801
• https://github.com/google/oss-fuzz-vulns/blob/main/vulns/mruby/OSV-2020-744.yaml
• https://github.com/mruby/mruby/commit/97319697c8f9f6ff27b32589947e1918e3015503

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