Input validation error in Zabbix - CVE-2026-23927

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Main Vulnerability Database Vulnerabilities #VU130254

Input validation error in Zabbix - CVE-2026-23927

Published: May 6, 2026


Vulnerability identifier: #VU130254
CSH Severity: Low
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-23927
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
Zabbix
Software vendor:
Zabbix

Description

The vulnerability allows a remote user to disclose sensitive information.

The vulnerability exists due to improper input validation in the Agent 2 Oracle plugin when processing the 'service' parameter in TNS connection strings. A remote privileged user can send a specially crafted request to disclose sensitive information.

Exploitation can cause Agent 2 to connect to an attacker-controlled server and leak Oracle database credentials if they are saved in a named session.


Remediation

Install security update from vendor's website.

External links