CVE-2026-79590

Published: Sep 10, 2026Modified: Sep 22, 2026Deferred

6.5

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Exploitability: 2.8 / Impact: 3.6

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)

Description

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.

Related CWEs

CWE-476

NULL Pointer Dereference

The product dereferences a pointer that it expects to be valid but is NULL.

References (3)

https://github.com/mruby/mruby/issues/7032

Source: cve@mitre.org

https://github.com/takumin/mruby/commit/c6866eed4ad5640b552ba79d16063e7ec70a0ac9

Source: cve@mitre.org

https://github.com/mruby/mruby/issues/7032

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0

Timeline

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