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CVE-2026-3535

CRITICAL
9.8
CVSS 3.1
Description
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).

Metadata

CVE ID
CVE-2026-3535
State
PUBLISHED
Assigner
Wordfence
Reserved
2026-03-04 18:14 UTC
Published
2026-04-08 06:43 UTC
Last updated
2026-04-08 18:04 UTC
Primary CWE
CWE-434
CWE-434 Unrestricted Upload of File with Dangerous Type
Vendor / Product
mlfactory / DSGVO Google Web Fonts GDPR
Sources
cve.org  ·  NVD

Severity & Metrics

9.8 CRITICAL CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC — CISA Coordinator
Exploitation
none
Automatable
yes
Tech. Impact
total
Affected products (1)
VendorProductPlatformVersions
mlfactory DSGVO Google Web Fonts GDPR — 0 ≤ 1.1
Weakness (CWE)
CWESourceDescription
CWE-434 cna CWE-434 Unrestricted Upload of File with Dangerous Type
CVSS scores (1)
ScoreSeverityVersionSourceVector
9.8 CRITICAL 3.1 cna CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
References (5)
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