CVE-2026-23929

Prototype pollution leading to stored XSS

State: Published
Severity: 8.5 High
Published: Aug 18, 2026
Updated: Aug 19, 2026
Reserved: Jan 19, 2026

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.

Scores

CVSS	Score	Vector	Source
4.0	8.5 High	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N	Zabbix

Weaknesses

CWE-1321 Improperly Controlled Modification of Object Prototype Attributes ("Prototype Pollution")

Affected Products

Product	Versions
ZabbixZabbix	6.0.44 through 6.0.45Affectedfrom 6.0.46Not affected 7.0.22 through 7.0.24Affectedfrom 7.0.25Not affected 7.4.6 through 7.4.8Affectedfrom 7.4.9Not affected

References

https://support.zabbix.com/browse/ZBX-28068

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.