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Vulnerability record · CVE-2026-85061 · published 3 September 2026

CVE-2026-85061: Cross-site scripting vulnerability

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.

10.0 CVSS 3.1 Critical EPSS 0.52% · top 58.0% CWE-79 · Cross-site scripting Deferred
10.0CVSS 3.1 base score
0.52%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
4References
9 Sep 2026Last modified by NVD

Description

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N

References

LinkTags
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

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Source: NIST National Vulnerability Database (record CVE-2026-85061), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.