CVE-2026-23929 - Prototype pollution leading to stored XSS · CoreCVE

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HIGH

Prototype pollution leading to stored XSS

Published Aug 18, 2026

8.5

HIGH

CVSS 4.0

EPSS 0.18%

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

Vendor Zabbix Product Zabbix Default
n/a
- Version
  6.0.44
  Status
  affected
  Constraints
  <=6.0.45
- Version
  7.0.22
  Status
  affected
  Constraints
  <=7.0.24
- Version
  7.4.6
  Status
  affected
  Constraints
  <=7.4.8

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor

Product

Default status

Versions

n/a

Version	Status	Constraints
6.0.44	affected	<=6.0.45
7.0.22	affected	<=7.0.24
7.4.6	affected	<=7.4.8

Remediation

Vendor solution

Update the affected components to their respective fixed versions.

Weaknesses (1)

CWE-1321

References (2)

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-60734
Advisory
https://support.zabbix.com/browse/ZBX-28068
Vendor Advisory

Link	Providers	Tags
https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-60734		Advisory
https://support.zabbix.com/browse/ZBX-28068		Vendor Advisory

Change history (0)

No recorded changes yet.

Sources

CVE.org / MITRE

Status PUBLISHED

Assigner Zabbix

Published Aug 18, 2026

Updated Aug 19, 2026

Reserved Jan 19, 2026

Link CVE-2026-23929

CISA Vulnrichment

Updated Aug 18, 2026

Status Analyzed

Modified Sep 8, 2026

Link CVE-2026-23929

Severity n/a

Public date n/a

Links CVE-2026-23929

Assigner Zabbix

Published Aug 18, 2026

Updated Aug 19, 2026

Exploited since n/a

Link EUVD-2026-60734

EUVD-2026-60734