CVE-2023-38499: TYPO3

Medium severity, CVSS 5.3. EPSS: 1.1% chance of exploitation in the next 30 days.

TYPO3 is an open source PHP based web content management system. Starting in version 9.4.0 and prior to versions 9.5.42 ELTS, 10.4.39 ELTS, 11.5.30, and 12.4.4, in multi-site scenarios, enumerating the HTTP query parameters `id` and `L` allowed out-of-scope access to rendered content in the website frontend. For instance, this allowed visitors to access content of an internal site by adding handcrafted query parameters to the URL of a site that was publicly available. TYPO3 versions 9.5.42 ELTS, 10.4.39 ELTS, 11.5.30, 12.4.4 fix the problem.

Affected products

• TYPO3 TYPO3: from 9.4.0, before 9.5.42 (fixed in 9.5.42); from 10.0.0, before 10.4.39 (fixed in 10.4.39); from 11.0.0, before 11.5.30 (fixed in 11.5.30); from 12.0.0, before 12.4.4 (fixed in 12.4.4)

Published 2023-07-25. Last modified 2026-06-17.