---
id: CVE-2026-23935
title: >-
  A Zabbix administrator is able to read out of bounds memory by utilizing a
  flaw in script item/preprocessing (JavaScript) HttpRequest logic, leading to
  potential confidentiality loss.
summary: >-
  A Zabbix administrator is able to read out of bounds memory by utilizing a
  flaw in script item/preprocessing (JavaScript) HttpRequest logic, leading to
  potential confidentiality loss.
severity: medium
cvss: 4.9
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N'
cwe:
  - CWE-125
vendor: zabbix
product: zabbix
affected:
  - 'zabbix >= 7.0.0, < 7.0.28'
  - 'zabbix >= 7.4.0, < 7.4.12'
patched:
  - zabbix 7.4.12
published: '2026-08-18'
updated: '2026-09-23'
sourceUpdated: '2026-09-23T14:17:37.820'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-23935'
references:
  - url: 'https://support.zabbix.com/browse/ZBX-28073'
    label: security@zabbix.com
tags:
  - nvd
epss: 0.00337
epssPercentile: 0.24304
ingestedAt: '2026-09-23T14:25:29.790Z'
---

## Overview

A Zabbix administrator is able to read out of bounds memory by utilizing a flaw in script item/preprocessing (JavaScript) HttpRequest logic, leading to potential confidentiality loss.

## Affected

- `zabbix >= 7.0.0, < 7.0.28`
- `zabbix >= 7.4.0, < 7.4.12`

## Remediation

Upgrade past the affected range:

- `zabbix 7.4.12`