What’s Vulnerable › Vulnerabilities
CVE-2026-23929: Prototype pollution leading to stored XSS
- Severity: medium (CVSS 5.4 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.3% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-08-18 · updated 2026-09-08
- Weakness: CWE-1321
Description
Prototype pollution vulnerability in searchParamsToObject() is leading to a persistent XSS in Maps. URL parameter processing was not filtering dangerous properties like __proto__, combined with jQuery's unsafe element creation that traversed the prototype chain.
Affected products
- Zabbix: from 6.0.0 before 6.0.46; from 7.0.0 before 7.0.25; from 7.4.0 before 7.4.9 — fixed in 6.0.46, 7.0.25, 7.4.9
How to fix
Upgrade to a fixed version: Zabbix 6.0.46, 7.0.25, 7.4.9. Check the vendor advisory for mitigations.
References
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