What’s Vulnerable › Vulnerabilities

CVE-2018-10199

• Severity: critical (CVSS 9.8 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2018-04-18 · updated 2026-06-17
• Weakness: CWE-416

Description

In versions of mruby up to and including 1.4.0, a use-after-free vulnerability exists in src/io.c::File#initilialize_copy(). An attacker that can cause Ruby code to be run can possibly use this to execute arbitrary code.

Affected products

• mruby/mruby: through 1.4.0

References

• https://github.com/mruby/mruby/commit/b51b21fc63c9805862322551387d9036f2b63433
• https://github.com/mruby/mruby/issues/4001
• https://github.com/mruby/mruby/commit/b51b21fc63c9805862322551387d9036f2b63433
• https://github.com/mruby/mruby/issues/4001

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