Extensions for Leaflet Map <= 5.4 - Unauthenticated Stored DOM-Based Cross-Site Scripting via External GeoJSON Property

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-103485
StatePUBLISHED
AssignerWordfence
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-10-29 10:17:00 UTC
Updated2026-10-29 14:56:26 UTC
DescriptionThe Extensions for Leaflet Map plugin for WordPress is vulnerable to Stored DOM-Based Cross-Site Scripting via the 'feature.properties[<template-token>]' parameter in all versions up to, and including, 5.4 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. Exploitation requires that a site administrator has previously configured a public map using the [leaflet-map]+[leaflet-geojson]+[choropleth] shortcode combination whose GeoJSON src URL is one the attacker controls — for example, through compromise of an external data host, a subdomain takeover, or a site intentionally pointing at an attacker-hosted feed.

Risk And Classification

Primary CVSS: v3.1 5.4 MEDIUM from [email protected]

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

EPSS: 0.003410000 probability, percentile 0.275860000 (date 2026-10-29)

Problem Types: CWE-79 | CWE-79 CWE-79 Improper Neutralization of Input During Web Page Generation

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary5.4MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N
3.1CNADECLARED5.4MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Hupe13 Extensions For Leaflet Map affected 5.4 semver Not specified

References

ReferenceSourceLinkTags
plugins.trac.wordpress.org/browser/extensions-leaflet-map/tags/5.4/php/choropleth.php [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/extensions-leaflet-map/tags/5.4/php/choropleth.php [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/extensions-leaflet-map/tags/5.4/js/choropleth.js [email protected] plugins.trac.wordpress.org
www.wordfence.com/threat-intel/vulnerabilities/id/00c5eb87-3e08-489a-9b30-2fde4... [email protected] www.wordfence.com
plugins.trac.wordpress.org/browser/extensions-leaflet-map/tags/5.4/js/choropleth.js [email protected] plugins.trac.wordpress.org
downloads.wordpress.org/plugin/extensions-leaflet-map.6.0.zip [email protected] downloads.wordpress.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: zickzick2 (en)

Additional Advisory Data

SourceTimeEvent
CNA2026-09-30T16:46:38.000ZVendor Notified
CNA2026-10-28T20:45:22.000ZDisclosed

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