e107inc e107 up to 2.3.6 alt_auth otherdb_auth.php login sql injection

Summaryinfo

A vulnerability was found in e107inc e107 up to 2.3.6 and classified as critical. The impacted element is the function Login of the file e107_plugins/alt_auth/otherdb_auth.php of the component alt_auth. Such manipulation leads to sql injection. This vulnerability is traded as CVE-2026-55572. The attack may be launched remotely. There is no exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, has been found in e107inc e107 up to 2.3.6. Affected by this issue is the function login of the file e107_plugins/alt_auth/otherdb_auth.php of the component alt_auth. The manipulation 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:

e107 is a content management system (CMS). Prior to 2.3.7, the bundled alt_auth plugin's otherdb and e107db authentication backends interpolate the submitted login username directly into SQL in e107_plugins/alt_auth/otherdb_auth.php and e107_plugins/alt_auth/e107db_auth.php. The login() methods execute those strings with PDO::query() before effective sanitization, so an unauthenticated user can inject SQL when alt_auth is installed and either backend is configured with a live external database connection. The injection can expose or modify data available to the configured database account, and query failures can additionally disclose the generated query through the debug-message path. This issue is fixed in version 2.3.7.

The advisory is shared for download at github.com. This vulnerability is handled as CVE-2026-55572 since 06/17/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1505.

By approaching the search of inurl:e107_plugins/alt_auth/otherdb_auth.php it is possible to find vulnerable targets with Google Hacking.

Upgrading to version 2.3.7 eliminates this vulnerability.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• Content Management System

Vendor

• e107inc

Name

• e107

Version

• 2.3.0
• 2.3.1
• 2.3.2
• 2.3.3
• 2.3.4
• 2.3.5
• 2.3.6

License

• open-source

Website

• Product: https://github.com/e107inc/e107/

CPE 2.3info

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CPE 2.2info

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Once again VulDB remains the best source for vulnerability data.

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