thorsten phpMyFAQ up to 4.1.5 Stop Word Management StopWords::add word sql injection

Summaryinfo

A vulnerability, which was classified as problematic, was found in thorsten phpMyFAQ up to 4.1.5. Impacted is the function StopWords::add of the component Stop Word Management. Such manipulation of the argument word leads to sql injection. This vulnerability is uniquely identified as CVE-2026-56738. The attack can be launched remotely. No exploit exists. You should upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in thorsten phpMyFAQ up to 4.1.5. Affected by this issue is the function StopWords::add of the component Stop Word Management. The manipulation of the argument word with an unknown input leads to a sql injection vulnerability. Using CWE to declare the problem leads to CWE-89. The product constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component. Impacted is confidentiality, integrity, and availability. CVE summarizes:

phpMyFAQ is an open source FAQ web application. The `StopWords::add()` method inversions prior to 4.1.6 builds a SQL `INSERT` statement using `sprintf()` and inserts the user-supplied stop word value directly into the query string without calling the application's database escaping function on it. A sibling method, `StopWords::update()`, which modifies an existing stop word, correctly escapes the same kind of input. The omission is isolated to the `add()` (insert) code path. An authenticated administrator who can reach the stop-word management feature can submit a crafted value as the "word" parameter that breaks out of the SQL string literal and injects arbitrary SQL, including statements to drop tables, exfiltrate data, or modify other rows in the database. Version 4.1.6 fixes the issue.

The advisory is available at github.com. This vulnerability is handled as CVE-2026-56738 since 06/22/2026. The exploitation is known to be easy. The attack may be launched remotely. Additional levels of successful authentication are required for exploitation. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1505 by the MITRE ATT&CK project.

Upgrading to version 4.1.6 eliminates this vulnerability.

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Productinfo

Type

• Content Management System

Vendor

• thorsten

Name

• phpMyFAQ

Version

• 4.1.0
• 4.1.1
• 4.1.2
• 4.1.3
• 4.1.4
• 4.1.5

License

• open-source

Website

• Product: https://github.com/thorsten/phpMyFAQ/

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