CVE-2026-23929 — Prototype pollution leading to stored XSS
Prototype pollution vulnerability in searchParamsToObject() is leading to a persistent XSS in Maps. URL parameter processing was not filtering dangerous properties like __proto_…
Published: 2026-08-18 · CVSS: 8.5 · CVSS 4.0
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7