Medium severity5.3NVD Advisory· Published Mar 24, 2026· Updated Sep 10, 2026

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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Zabbix/Zabbixllm-fuzzy2 versions
(expand)+ 1 more
- (no CPE)
- (no CPE)range: 7.4.0

Patches

Vulnerability mechanics

References

support.zabbix.com/browse/ZBX-27641nvdVendor Advisory

News mentions

No linked articles in our index yet.

Severity

MediumCVSS v3.1

5.3/ 10

CVSS v46.9

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

Attack vector: Network
Complexity: Low
Privileges: None
User interaction: None
Scope: Unchanged
Confidentiality: None
Integrity: None
Availability: Low

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

EPSS

Probability of exploitation in the next 30 days.

0.27%

VYPR risk score

Composite of severity, exploitation, and reach.

0.34medium

cvss	0.345
epss	0.000
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000

Weaknesses

CWE-470
Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection')

CVE ID

CVE-2026-23923

Credits

ZW
Zabbix wants to thank pitticus for submitting this report on the HackerOne bug bounty platform.
reporter