DSGVO Google Web Fonts GDPR <= 1.1 - Unauthenticated Arbitrary File Upload via 'fonturl' Parameter
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-434.
Summary
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).
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-3535
- 2026-10-03 Alias added: GHSA-x9xw-x29g-m332
References
Other 5
- https://www.wordfence.com/threat-intel/vulnerabilities/id/6203ffaf-5efd-4c66-85f0-cc3a05a03084?source=cve
- https://plugins.trac.wordpress.org/browser/dsgvo-google-web-fonts-gdpr/tags/1.1/dsgvo-google-web-fonts-gdpr.php#L46
- https://plugins.trac.wordpress.org/browser/dsgvo-google-web-fonts-gdpr/tags/1.1/dsgvo-google-web-fonts-gdpr.php#L159
- https://plugins.trac.wordpress.org/browser/dsgvo-google-web-fonts-gdpr/trunk/dsgvo-google-web-fonts-gdpr.php#L46
- https://plugins.trac.wordpress.org/browser/dsgvo-google-web-fonts-gdpr/trunk/dsgvo-google-web-fonts-gdpr.php#L159
More mlfactory vulnerabilities
- TI-2026-56430 WordPress Shirt Product Designer for WooCommerce plugin 1.0.4 - Broken Access Control vulnerability CVSS 3.1HIGH 7.5
- TI-2026-82279 Stored cross-site scripting in DSGVO All in one for WP via comments CVSS 3.1HIGH 7.2
- TI-2021-06586 DSGVO All in one for WP < 4.0 - Unauthenticated Stored Cross-Site Scripting (XSS) CVSS 3.1MEDIUM 6.1
- TI-2024-12398 DSGVO All in one for WP <= 4.6 - Cross-Site Request Forgery to Account Deletion CVSS 3.1MEDIUM 6.5
- TI-2026-03741 DSGVO All in one for WP <= 4.9 - Missing Authorization to Authenticated (Subscriber+) Settings Reset CVSS 3.1MEDIUM 4.3
Sources
- CVE-2026-3535 · CVE Program
- CVE-2026-3535 · NVD
- FIRST EPSS
- GHSA-x9xw-x29g-m332 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences