What is GHSA-4mp5-p9jh-3rv5?

GHSA-4mp5-p9jh-3rv5 is a security advisory published by GitHub Security Advisories with Medium severity. An unauthenticated attacker can exploit the Frontend 'validate' action to blindly instantiate...

Which CVE IDs does GHSA-4mp5-p9jh-3rv5 cover?

GHSA-4mp5-p9jh-3rv5 covers the following CVE IDs: CVE-2026-23923. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-4mp5-p9jh-3rv5?

GHSA-4mp5-p9jh-3rv5 has a CVSS v3 base score of 5.3, published by GitHub Security Advisories.

GHSA-4mp5-p9jh-3rv5MediumCVSS 5.3

An unauthenticated attacker can exploit the Frontend 'validate' action to blindly instantiate...

Vendor

GitHub Security Advisories

Published

March 24, 2026

Last Modified

September 10, 2026

🔗 CVE IDs covered (1)

CVE-2026-23923 →

📋 Description

An unauthenticated attacker can exploit the Frontend 'validate' action to blindly instantiate arbitrary PHP classes. The impact depends on environment setup but appears limited at this time.

🔗 References (3)

https://nvd.nist.gov/vuln/detail/CVE-2026-23923
https://support.zabbix.com/browse/ZBX-27641
https://github.com/advisories/GHSA-4mp5-p9jh-3rv5