GHSA-2fx5-pggv-6jjr
TYPO3 Potential Open Redirect via Parsing Differences
Packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| Packagist | typo3/cms-core | >= 9.0.0, < 9.5.49 | 9.5.49 |
| Packagist | typo3/cms-core | >= 10.0.0, < 10.4.48 | 10.4.48 |
| Packagist | typo3/cms-core | >= 11.0.0, < 11.5.42 | 11.5.42 |
| Packagist | typo3/cms-core | >= 12.0.0, < 12.4.25 | 12.4.25 |
| Packagist | typo3/cms-core | >= 13.0.0, < 13.4.3 | 13.4.3 |
Details
As written in the advisory (Markdown source, shown as plain text).
### Problem
Applications that use `TYPO3\CMS\Core\Http\Uri` to parse externally provided URLs (e.g., via a query parameter) and validate the host of the parsed URL may be vulnerable to open redirect or SSRF attacks if the URL is used after passing the validation checks.
### Solution
Update to TYPO3 versions 9.5.49 ELTS, 10.4.48 ELTS, 11.5.42 ELTS, 12.4.25 LTS, 13.4.3 LTS that fix the problem described.
### Credits
Thanks to Sam Mush and Christian Eßl who reported this issue and to TYPO3 core & security team member Benjamin Franzke who fixed the issue.
### References
* [TYPO3-CORE-SA-2025-002](https://typo3.org/security/advisory/typo3-core-sa-2025-002)
References
External links from the advisory. They lead to third-party sites.