CVE-2025-14351: Custom Fonts – Host Your Fonts Locally <= 2.1.16 - Missing Authorization to Unauthenticated Font Deletion

Severity: medium (CVSS 5.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-01-20 · updated 2026-06-17
Weakness: CWE-862

Description

The Custom Fonts – Host Your Fonts Locally plugin for WordPress is vulnerable to unauthorized loss of data due to a missing capability check on the 'BCF_Google_Fonts_Compatibility' class constructor function in all versions up to, and including, 2.1.16. This makes it possible for unauthenticated attackers to delete font directory and rewrite theme.json file.

Affected products

brainstormforce Custom Fonts – Host Your Fonts Locally: through 2.1.16

References

https://plugins.trac.wordpress.org/browser/custom-fonts/trunk/includes/class-bcf-google-fonts-compatibility.php#L88
https://plugins.trac.wordpress.org/changeset/3442237/custom-fonts
https://www.wordfence.com/threat-intel/vulnerabilities/id/60e3a506-8811-4e7d-a16c-02f91c757705?source=cve

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