CVE-2025-69993: Leafletjs Leaflet

Medium severity, CVSS 6.1. EPSS: 0.2% chance of exploitation in the next 30 days.

Leaflet versions up to and including 1.9.4 are vulnerable to Cross-Site Scripting (XSS) via the bindPopup() method. This method renders user-supplied input as raw HTML without sanitization, allowing attackers to inject arbitrary JavaScript code through event handler attributes (e.g., <img src=x onerror="alert('XSS')">). When a victim views an affected map popup, the malicious script executes in the context of the victim's browser session.

Affected products

• Leafletjs Leaflet: up to and including 1.9.4

Published 2026-04-14. Last modified 2026-06-17.