What is GHSA-q9f2-rhj2-x3xg?

GHSA-q9f2-rhj2-x3xg is a security advisory published by GitHub Security Advisories with Medium severity. A NULL pointer dereference vulnerability exists in the Prism parser component of mruby 4.0.0. An...

Which CVE IDs does GHSA-q9f2-rhj2-x3xg cover?

GHSA-q9f2-rhj2-x3xg covers the following CVE IDs: CVE-2026-79590. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-q9f2-rhj2-x3xg?

GHSA-q9f2-rhj2-x3xg has a CVSS v3 base score of 6.5, published by GitHub Security Advisories.

GHSA-q9f2-rhj2-x3xgMediumCVSS 6.5

A NULL pointer dereference vulnerability exists in the Prism parser component of mruby 4.0.0. An...

Vendor

GitHub Security Advisories

Published

September 11, 2026

Last Modified

September 14, 2026

🔗 CVE IDs covered (1)

CVE-2026-79590 →

📋 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 (4)

https://nvd.nist.gov/vuln/detail/CVE-2026-79590
https://github.com/mruby/mruby/issues/7032
https://github.com/takumin/mruby/commit/c6866eed4ad5640b552ba79d16063e7ec70a0ac9
https://github.com/advisories/GHSA-q9f2-rhj2-x3xg