TYPO3-EXT-SA-2026-016: Information Disclosure in extension "Modules" (modules)
It has been discovered that the extension "Modules" (modules) is vulnerable to Information Disclosure.
- Release Date: August 25, 2026
- Component Type: Third party extension. This extension is not a part of the TYPO3 default installation.
- Component: "Modules" (modules)
- Composer Package Name: codingms/modules
- Vulnerability Type: Information Disclosure
- Affected Versions: 7.10.3 and below, 8.0.0 - 8.1.3
- Severity: Medium
- Suggested CVSS v4.0: AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
- References: CVE-2026-77127, CWE-639
Problem Description
The extension fails to restrict a backend AJAX endpoint for inline editing to fields the current user is permitted to see or edit. An authenticated, low-privileged backend user can supply arbitrary table, field and record parameters, and trigger an error response that discloses the current database value of the requested field, leading to disclosure of sensitive information such as backend and frontend user password hashes.
Exploitation requires a valid, authenticated TYPO3 backend user account with access to the extensions backend module.
Solution
Updated versions 7.10.4 and 8.1.4 are available from the TYPO3 extension manager, packagist and at
https://extensions.typo3.org/extension/download/modules/8.1.4/zip
https://extensions.typo3.org/extension/download/modules/7.10.4/zip
Users of the extension are advised to update the extension as soon as possible.
Credits
Thanks to Lim, Han Seop and Christian Kuhn for reporting the vulnerability, and to Thomas Deuling for providing updated versions of the extension.
General Advice
Follow the recommendations that are given in the TYPO3 Security Guide.
