CVE-2026-103485
Received Received - Intake

Stored DOM-Based XSS in Extensions for Leaflet Map WordPress Plugin

Publication date: 2026-10-29

Last updated on: 2026-10-29

Assigner: Wordfence

Description
The 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.

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Meta Information

Published
2026-10-29
Last Modified
2026-10-29
Generated
2026-10-29
AI Q&A
2026-10-29
EPSS Evaluated
N/A
NVD
CVE-2026-103485
EUVD
EUVD-2026-112681

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
hupe13 Extensions for Leaflet Map 0

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
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.

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Executive Summary

This vulnerability is a Stored DOM-Based Cross-Site Scripting (XSS) flaw in the Extensions for Leaflet Map WordPress plugin. It allows unauthenticated attackers to inject malicious scripts via the 'feature.properties[<template-token>]' parameter due to insufficient input sanitization and output escaping. The attack requires a site administrator to have previously configured a public map using specific shortcodes with a GeoJSON source URL controlled by the attacker.

Impact Analysis

If exploited, this vulnerability could allow attackers to inject arbitrary web scripts into pages viewed by users. This could lead to theft of session cookies, account takeover, or delivery of malware to visitors. The impact depends on the privileges of the affected user and the nature of the injected script.

Mitigation Strategies

Update the Extensions for Leaflet Map plugin to the latest version immediately. If no patch is available, remove the plugin from your WordPress installation to prevent exploitation.

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