CVE-2026-23929

MEDIUMCVSS 5.4/10EPSS 0.30%

Last modified

CVE-2026-23929 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. 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.. EPSS estimates a 0.30% chance of exploitation in the next 30 days.

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.

Metrics

Weakness Enumeration

Affected Software

VendorProductVersions
ZabbixZabbix>= 6.0.0, < 6.0.46
ZabbixZabbix>= 7.0.0, < 7.0.25
ZabbixZabbix>= 7.4.0, < 7.4.9

References

Timeline

Published
Last Modified
Status
Analyzed

Frequently Asked Questions

What is CVE-2026-23929?
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.
How severe is CVE-2026-23929?
CVE-2026-23929 has a CVSS score of 5.4/10 (MEDIUM severity). The EPSS model estimates a 0.30% probability of exploitation in the next 30 days.
How do I fix CVE-2026-23929?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST