CVE-2026-79590 Affecting mruby package, versions *
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-DEBIAN12-MRUBY-19687846
- published12 Sept 2026
- disclosed10 Sept 2026
Introduced: 10 Sep 2026
CVE-2026-79590 (opens in a new tab)How to fix?
There is no fixed version for Debian:12 mruby.
NVD Description
Note: Versions mentioned in the description apply only to the upstream mruby package and not the mruby package as distributed by Debian.
See How to fix? for Debian:12 relevant fixed versions and status.
A NULL pointer dereference vulnerability exists in the Prism parser component of mruby 4.0.0. An attacker can provide a specially crafted Ruby source file that triggers the parser to pass a NULL pointer to nonnull string handling functions, resulting in undefined behavior and application crash.