CVE-2026-23923
Received Received - Intake

PHP Object Injection via Unauthenticated Frontend Validate Action in Zabbix

Publication date: 2026-03-24

Last updated on: 2026-03-24

Assigner: Zabbix

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.

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Meta Information

Published
2026-03-24
Last Modified
2026-03-24
Generated
2026-07-06
AI Q&A
2026-03-24
EPSS Evaluated
2026-07-04
NVD
CVE-2026-23923
EUVD
EUVD-2026-14956

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
zabbix zabbix *

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-470 The product uses external input with reflection to select which classes or code to use, but it does not sufficiently prevent the input from selecting improper classes or code.

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Executive Summary

This vulnerability allows an unauthenticated attacker to exploit the Frontend 'validate' action to blindly instantiate arbitrary PHP classes.

The exact impact depends on the environment setup but currently appears to be limited.

Impact Analysis

The impact of this vulnerability depends on the environment setup.

Since it allows arbitrary PHP class instantiation without authentication, it could potentially lead to unexpected behavior or exploitation depending on the specific environment, but the impact is currently considered limited.

Compliance Impact

I don't know

Detection Guidance

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