Thorsten phpMyFAQ up to 4.1.8 Autocomplete PdoMysql::escape search sql injection

Summaryinfo

A vulnerability has been found in Thorsten phpMyFAQ up to 4.1.8 and classified as critical. This affects the function PdoMysql::escape of the component Autocomplete. Performing a manipulation of the argument Search results in sql injection. This vulnerability is known as CVE-2026-109573. Remote exploitation of the attack is possible. No exploit is available. The affected component should be upgraded.

Detailsinfo

A vulnerability, which was classified as critical, was found in Thorsten phpMyFAQ up to 4.1.8. This affects the function PdoMysql::escape of the component Autocomplete. The manipulation of the argument search with an unknown input leads to a sql injection vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

phpMyFAQ before 4.1.9 contains an SQL injection vulnerability in PdoMysql::escape(), which escapes single quotes with backslashes that are treated literally when MySQL or MariaDB runs in NO_BACKSLASH_ESCAPES mode. Unauthenticated attackers can send a Unicode right single quotation mark in the search parameter of api/autocomplete, which is normalized to an ASCII quote, to read credentials and configuration secrets, modify records, or drop tables.

It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2026-109573 since 10/12/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1505 according to MITRE ATT&CK.

Upgrading to version 4.1.9 or 4.2.0-beta 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
• 4.1.6
• 4.1.7
• 4.1.8

License

• open-source

Website

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

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