XML External Entity (XXE) Processing in TYPO3 CoreGHSA-qffc-gwpp-m2xr
GHSA-qffc-gwpp-m2xr is a security vulnerability in typo3/cms. A fix is available for typo3/cms — see the affected versions and patch details below.
Real-World Exposure
typo3/cms🐘typo3/cmsReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects Packagist packages — download data is not available via public APIs for these ecosystems.
Description
All XML processing within the TYPO3 CMS are vulnerable to XEE processing. This can lead to load internal and/or external (file) content within an XML structure. Furthermore it is possible to inject arbitrary files for an XML Denial of Service attack. For more information on that topic see https://www.owasp.org/index.php/XML_External_Entity_(XXE)_Processing.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐘Packagist | typo3/cms | ≥ 6.2.0&&< 6.2.19 | 6.2.19composer require typo3/cms:^6.2.19 |
| 🐘Packagist | typo3/cms | ≥ 7.6.0&&< 7.6.4 | 7.6.4composer require typo3/cms:^7.6.4 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for typo3/cms, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update typo3/cms to 6.2.19 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-qffc-gwpp-m2xr is resolved across your whole dependency graph.
Workarounds
Cap what an attacker can consume: apply request size, rate and timeout limits in front of the affected component, and run it with memory and CPU limits so exhaustion degrades one worker rather than the whole service.
Frequently Asked Questions
Is GHSA-qffc-gwpp-m2xr in your dependencies?
Find it across Packagist, including transitive dependencies.