CVE-2026-79590

Published Sep 10, 2026 CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Title NULL Pointer Dereference in Prism Parser of mruby 4.0.0
Type Values Removed Values Added
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Mruby
Mruby mruby
Vendors & Products Mruby
Mruby mruby
Type Values Removed Values Added
Title NULL Pointer Dereference in Prism Parser of mruby 4.0.0
Weaknesses CWE-476
Type Values Removed Values Added
Title NULL Pointer Dereference in Prism Parser of mruby 4.0.0
Weaknesses CWE-476
Type Values Removed Values Added
Title NULL Pointer Dereference in Prism Parser of mruby 4.0.0
Weaknesses CWE-476
Type Values Removed Values Added
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.
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
Sep 14, 2026, 5:16 PM
Reserved
Aug 25, 2026, 12:00 AM
Status
Deferred
Published
Sep 10, 2026, 10:17 PM
Modified
Sep 22, 2026, 8:00 PM