CVE-2026-1800
Fonts Manager | Custom Fonts <= 1.2 - Unauthenticated SQL Injection via fmcfIdSelectedFnt parameter
Description
The Fonts Manager | Custom Fonts plugin for WordPress is vulnerable to time-based SQL Injection via the ‘fmcfIdSelectedFnt’ parameter in all versions up to, and including, 1.2 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for unauthenticated attackers to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database.
INFO
Published Date :
March 21, 2026, 4:16 a.m.
Last Modified :
March 21, 2026, 4:16 a.m.
Remotely Exploit :
Yes !
Source :
[email protected]
Affected Products
The following products are affected by CVE-2026-1800
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | [email protected] |
Solution
- Update the Fonts Manager plugin to the latest version.
- Apply input validation and parameterized queries.
- Sanitize all user-supplied input strictly.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-1800.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-1800 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-1800
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-1800 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-1800 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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New CVE Received by [email protected]
Mar. 21, 2026
Action Type Old Value New Value Added Description The Fonts Manager | Custom Fonts plugin for WordPress is vulnerable to time-based SQL Injection via the ‘fmcfIdSelectedFnt’ parameter in all versions up to, and including, 1.2 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for unauthenticated attackers to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database. Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Added CWE CWE-89 Added Reference https://plugins.trac.wordpress.org/browser/fonts-manager-custom-fonts/tags/1.2/classes/fmcf_stylish_font.php#L99 Added Reference https://plugins.trac.wordpress.org/browser/fonts-manager-custom-fonts/tags/1.2/includes/fmcf-stylish-fonts-functions.php#L552 Added Reference https://plugins.trac.wordpress.org/browser/fonts-manager-custom-fonts/tags/1.2/includes/fmcf-stylish-fonts-functions.php#L573 Added Reference https://plugins.trac.wordpress.org/browser/fonts-manager-custom-fonts/tags/1.2/includes/fmcf-stylish-fonts-functions.php#L626 Added Reference https://www.wordfence.com/threat-intel/vulnerabilities/id/0a37f3bf-5eaf-449d-a1d0-c86ae1a61078?source=cve