---
id: CVE-2026-23931
title: >-
  The frontend validatate.api.exists action can be exploited by authenticated
  users to extract plaintext user macro values leading to potential loss of
  confidentiality.
summary: >-
  The frontend validatate.api.exists action can be exploited by authenticated
  users to extract plaintext user macro values leading to potential loss of
  confidentiality.
severity: medium
cvss: 4.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N'
cwe:
  - CWE-203
vendor: zabbix
product: zabbix
affected:
  - 'zabbix >= 7.4.0, < 7.4.11'
patched:
  - zabbix 7.4.11
published: '2026-08-18'
updated: '2026-09-23'
sourceUpdated: '2026-09-23T14:38:36.927'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-23931'
references:
  - url: 'https://support.zabbix.com/browse/ZBX-28070'
    label: security@zabbix.com
tags:
  - nvd
epss: 0.00279
epssPercentile: 0.20584
ingestedAt: '2026-09-23T15:26:23.402Z'
---

## Overview

The frontend validatate.api.exists action can be exploited by authenticated users to extract plaintext user macro values leading to potential loss of confidentiality.

## Affected

- `zabbix >= 7.4.0, < 7.4.11`

## Remediation

Upgrade past the affected range:

- `zabbix 7.4.11`