CVE-2026-23929

High

Open

TLP:CLEAR

Prototype pollution leading to stored XSS

NVD CVE.org

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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.

Details

CVSS Score: 8.5
CVSS Vector: 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
Confidence: 90%
Published: Aug 18, 2026
Last Modified: Aug 18, 2026

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