TYPO3-EXT-SA-2026-032: Server-Side Request Forgery in extension "Kitodo.Presentation" (dlf)

• Release Date: October 20, 2026
• Component Type: Third party extension. This extension is not a part of the TYPO3 default installation.
• Component: "Kitodo.Presentation" (dlf)
• Composer Package Name: kitodo/presentation
• Vulnerability Type: Server-Side Request Forgery
• Affected Versions: 6.0.0 and below, 7.0.0 - 7.0.1
• Severity: Medium
• Suggested CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N
• References: CVE-2026-112237, CWE-918

Problem Description

The extension provides a public proxy endpoint that fetches a URL on behalf of the visitor. For one HTTP request method, the endpoint does not apply the authorization check that protects the other methods, so the URL it fetches is fully controlled by the requester.

An unauthenticated attacker can make the server send requests to arbitrary internal or external hosts. The attacker receives the status code and selected response headers, which allows probing of internal hosts and ports. Response bodies are not disclosed.

Solution

Updated versions 6.0.1 and 7.0.2 are available from the TYPO3 extension manager, packagist and at

https://extensions.typo3.org/extension/download/dlf/6.0.1/zip 
https://extensions.typo3.org/extension/download/dlf/7.0.2/zip 

Users of the extension are advised to update the extension as soon as possible.

Credits

Thanks to Xanlar Agamalizade for reporting the vulnerability and to Sebastian Meyer for providing updated versions of the extension.

General Advice

Follow the recommendations that are given in the TYPO3 Security Guide.