Quick answers
- Is CVE-2026-23929 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-23929 being exploited in the wild.
- How severe is CVE-2026-23929?
- Medium severity, with a CVSS score of 5.4, published 18 August 2026.
- Which products and versions are affected?
- Zabbix 6.0.44-6.0.45, 7.0.22-7.0.24, 7.4.6-7.4.8.
- Is there a fix for CVE-2026-23929?
- A patch was published on 2026-08-18: Fixed in versions 6.0.46, 7.0.25, and 7.4.9 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-23929 attacked?
- It is attacked over the network, in a web application.
- Am I affected by CVE-2026-23929?
- Check whether you run Zabbix at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
A prototype pollution vulnerability exists in the searchParamsToObject() function that processes URL parameters without filtering dangerous properties like __proto__. When combined with jQuery's unsafe element creation, this allows traversal of the prototype chain. An authenticated Zabbix user with access to the Maps page can craft a malicious URL containing injected HTML, which is stored in the database and executed in the browsers of all users viewing the affected map. The vulnerability requires user authentication and a user interaction (viewing the malicious map), but results in persistent XSS execution. Patches are available in Zabbix 6.0.46, 7.0.25, and 7.4.9.
Affected products
- Zabbix Zabbix 6.0.44-6.0.45, 7.0.22-7.0.24, 7.4.6-7.4.8
Timeline
- 2026-08-18: disclosed
- 2026-08-18: patched: Fixed in versions 6.0.46, 7.0.25, and 7.4.9