What is CVE-2026-3535?

CVE-2026-3535 is a critical-severity vulnerability in Mlfactory Dsgvo Google Web Fonts Gdpr, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 9.8/10. Published 2026-04-08.

How severe is CVE-2026-3535?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Arbitrary file upload in Mlfactory Dsgvo Google Web Fonts Gdpr

CVE-2026-3535

The DSGVO Google Web Fonts GDPR plugin for WordPress is vulnerable to arbitrary file upload due to missing file type validation in the `DSGVOGWPdownloadGoogleFonts()` function in all versions up to, and including, 1.1. The function is exposed via a `wp_ajax_nopriv_` hook, requiring no authentication. It fetches a user-supplied URL as a CSS file, extracts URLs from its content, and downloads those files to a publicly accessible directory without validating the file type. This makes it possible for unauthenticated attackers to upload arbitrary files including PHP webshells, leading to remote code execution. The exploit requires the site to use one of a handful of specific themes (twentyfifteen, twentyseventeen, twentysixteen, storefront, salient, or shapely).

Vulnerability class: Unrestricted File Upload

EPSS: 0.009 (56.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Mlfactory Dsgvo Google Web Fonts Gdpr — versions 0

Weakness classification (CWE)

CWE-434 — Unrestricted Upload of File with Dangerous Type

References

Frequently asked questions

What is CVE-2026-3535?: CVE-2026-3535 is a critical-severity vulnerability in Mlfactory Dsgvo Google Web Fonts Gdpr, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 9.8/10. Published 2026-04-08.
How severe is CVE-2026-3535?: Critical severity. CVSS v3 base score is 9.8 out of 10.