MapLibre GL JS up to 6.4.0 Sanitization src/util/dom.ts DOM.sanitize cross site scripting

Summaryinfo

A vulnerability classified as problematic has been found in MapLibre GL JS up to 6.4.0. This affects the function DOM.sanitize of the file src/util/dom.ts of the component Sanitization. This manipulation causes cross site scripting. This vulnerability appears as CVE-2026-85061. The attack may be initiated remotely. There is no available exploit.

Detailsinfo

A vulnerability classified as problematic was found in MapLibre GL JS up to 6.4.0. Affected by this vulnerability is the function DOM.sanitize of the file src/util/dom.ts of the component Sanitization. The manipulation with an unknown input leads to a cross site scripting vulnerability. The CWE definition for the vulnerability is CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. As an impact it is known to affect integrity. The summary by CVE is:

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.

The advisory is shared at github.com. This vulnerability is known as CVE-2026-85061 since 09/02/2026. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1059.007 for this issue.

Upgrading to version 6.4.1 eliminates this vulnerability.

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Productinfo

Vendor

• MapLibre

Name

• GL JS

Version

• 6.0
• 6.1
• 6.2
• 6.3
• 6.4.0

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Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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