CVE-2026-23923

6.9 MEDIUM 0.3% exploit odds Fix listed Other Web app

What it is

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.

At a glance

Exploitability: Can be exploited over the network without logging in. Limited direct impact.
Exploit odds: 0.3% chance of exploitation in the next 30 days (EPSS).
Fix: A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

2026-03-24 19:16 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-09-10 21:16 UTC Last updatedMost recent change to the record

Details

Published: 2026-03-24 19:16 UTC
Last modified: 2026-09-10 21:16 UTC
Exploit probability: 0.3% · EPSS, next 30 days
Weakness: CWE-470
Record status: Analyzed

Affected

Zabbix < 7.4.7

Attack profile CVSS 4.0 · 6.9

Attack vector: Network
Complexity: Low
Attack requirements: None
Privileges needed: None
User interaction: None
Confidentiality: None
Integrity: None
Availability: Low

Raw vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

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Fix and advisories

https://support.zabbix.com/browse/ZBX-27641

References

https://support.zabbix.com/browse/ZBX-27641

NVD record · CVE.org record