What’s Vulnerable › Vulnerabilities
CVE-2026-23935: Use-after-free read in script item/preprocessing HttpRequest body
- Severity: medium (CVSS 4.9 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.5% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-08-18 · updated 2026-09-23
- Weakness: CWE-125
Description
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 products
- Zabbix: from 7.0.0 before 7.0.28; from 7.4.0 before 7.4.12 — fixed in 7.0.28, 7.4.12
How to fix
Upgrade to a fixed version: Zabbix 7.0.28, 7.4.12. Check the vendor advisory for mitigations.
References
Get alerted when CVE-2026-23935 or the next vulnerability affects your stack