CVE-2025-14351

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

Published Jan 20, 2026 CVSS 3.1 · 5.3 Medium EPSS < 1% KEV · Not listed

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.

Analysis

Technical impact

The Custom Fonts – Host Your Fonts Locally WordPress plugin is vulnerable in all versions up to and including 2.1.16 due to a missing capability check in the BCF_Google_Fonts_Compatibility class constructor, which allows any unauthenticated user to trigger font directory deletion and overwrite the theme.json file. This flaw results in loss of font assets, potential corruption of theme settings, and the inability to access the site without manual restoration. The weakness is classified as a missing authorization issue (CWE-862).

Affected Systems

BRAINSTORMFORCE Custom Fonts – Host Your Fonts Locally plugin on WordPress installations running any version up to and including 2.1.16 is affected; newer releases are not mentioned as vulnerable.

Risk and Exploitability

The risk is moderate with a CVSS score of 5.3 and an EPSS score of less than 1%, indicating low exploitation probability. The vulnerability is not listed in the CISA KEV catalog. Attackers could exploit the flaw remotely by simply loading the plugin’s constructor via a web request, allowing unauthenticated deletion of critical font resources and theme configuration.

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

brainstormforce

Custom Fonts – Host Your Fonts Locally

unaffected

Version	Status	Constraints
`0`	affected	≤ 2.1.16

No data.

Vendor	Product	Versions
Brainstormforce	Custom Fonts	—
Wordpress	Wordpress	—

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

Upgrade the Custom Fonts plugin to a version newer than 2.1.16 where the missing authorization check has been corrected
If an upgrade cannot be performed immediately, disable or remove the plugin until a patched version is available to prevent further data loss
Restore or re-create the deleted font directory and theme.json from backup or reconfigure the theme settings to restore normal site functionality

Generated by OpenCVE AI on April 21, 2026 at 16:16 UTC.

Tracking

Advisories

No advisories available

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact Low

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.270% probability within 30 days)

Exploitation none

Automatable yes

Technical Impact partial

References

Link	Providers
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

History

Jan 20, 2026 9:15 PM Scoring metrics updated View changes

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Jan 20, 2026 8:45 AM First appearance in the feed. Affected vendors updated View changes

Type	Values Removed	Values Added
First Time appeared		Brainstormforce Brainstormforce custom Fonts Wordpress Wordpress wordpress
Vendors & Products		Brainstormforce Brainstormforce custom Fonts Wordpress Wordpress wordpress

Jan 20, 2026 4:00 AM Description updated. Title updated. Weaknesses updated. Added references. Scoring metrics updated View changes

Type	Values Removed	Values Added
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.
Title		Custom Fonts – Host Your Fonts Locally <= 2.1.16 - Missing Authorization to Unauthenticated Font Deletion
Weaknesses		CWE-862
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
Metrics		cvssV3_1 `{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N'}`