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Vulnerability · Published Apr 14, 2026 · Assigned by mitre

CVE-2025-69993

Medium 6.1

In plain English

A medium-severity cross-site scripting in the leaflet package (Debian). Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 9% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code.

Severity (CVSS 3.1)6.1Medium
Exploit odds (30 days)0.2%top 91.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack tooling1Public PoC

Official description

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 packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12leafletno fix listedDEBIAN-CVE-2025-69993
Debian:13leafletno fix listedDEBIAN-CVE-2025-69993
Debian:14leafletno fix listedDEBIAN-CVE-2025-69993
Ubuntu:22.04:LTSleafletno fix listedUBUNTU-CVE-2025-69993
Ubuntu:24.04:LTSleafletno fix listedUBUNTU-CVE-2025-69993
Ubuntu:25.10leafletno fix listedUBUNTU-CVE-2025-69993
Ubuntu:26.04:LTSleafletno fix listedUBUNTU-CVE-2025-69993
Ubuntu:26.10leafletno fix listedUBUNTU-CVE-2025-69993

Affected products (as reported)

VendorProductVersions
n/a n/a n/a

Weakness: CWE-79 · Vector: CVSS:3.1/AC:L/AV:N/A:N/C:L/I:L/PR:N/S:C/UI:R

References