CVE-2022-43515 MEDIUM

CVE-2022-43515: X-Forwarded-For header is active by default causes access to Zabbix sites in maintenance mode

Vendor Zabbix
Product Frontend
Weakness CWE-20 · Input validation
Published December 12, 2022
Last update November 3, 2025
View on NVD All CVEs

CVSS base score

5.3/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality None
Integrity Low

CVSS vector

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

What the vulnerability does

01Description

Zabbix Frontend provides a feature that allows admins to maintain the installation and ensure that only certain IP addresses can access it. In this way, any user will not be able to access the Zabbix Frontend while it is being maintained and possible sensitive data will be prevented from being disclosed. An attacker can bypass this protection and access the instance using IP address not listed in the defined range.

Key dates

02Disclosure timeline

December 12, 2022 CVE published
November 3, 2025 Record updated