CVE-2026-85061

MapLibre GL JS is an interactive vector tile map library for web browsers. Prior to 6.4.1, DOM.sanitize() in src/util/dom.ts iterates elem.attributes as a live NamedNodeMap while removeAttributes() removes attributes from the same collection, shifting indexes and skipping an adjacent dangerous attribute. An attacker who controls untrusted third-party style attribution strings or user-supplied custom attributions can supply consecutive dangerous attributes, causing an attribute such as onload or ontoggle to survive sanitization and execute when the attribution control inserts the content into innerHTML. A victim must render the affected map content for the script to execute. This issue is fixed in version 6.4.1.

• CWE-79

• https://github.com/maplibre/maplibre-gl-js/commit/1da69f3cd913a39fa948708e01478663bf48bc27
• https://github.com/maplibre/maplibre-gl-js/pull/8189
• https://github.com/maplibre/maplibre-gl-js/releases/tag/v6.4.1
• https://github.com/maplibre/maplibre-gl-js/security/advisories/GHSA-jrc7-96c5-q579

Published

Sep 3, 2026

Last Modified

Sep 3, 2026

Status

Received

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