CVE-2025-57758 is a medium-severity (CVSS 4.3) CWE-284 vulnerability in contao/core-bundle. A fix is available for contao/core-bundle — see the affected versions and patch details below.
Contao has improper access control in the back end voters
Exploitation Status
No confirmed exploitation observed yet
- CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.
Exploitation and automatability from CISA’s SSVC triage for CVE-2025-57758.
EPSS Exploitation Probability
Probability of exploitation in the next 30 days, from FIRST.org EPSS.
How urgent is this, really
Where this sits among everything scored
Real-World Exposure
contao/core-bundle🐘contao/core-bundle🐘contao/contao🐘contao/contaoReal-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
Impact
The table access voter in the back end doesn't check if a user is allowed to access the corresponding module.
Patches
Update to Contao 5.3.38 or 5.6.1.
Workarounds
Do not rely solely on the voter and additionally check USER_CAN_ACCESS_MODULE.
For more information
If you have any questions or comments about this advisory, open an issue in contao/contao.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐘Packagist | contao/core-bundle | ≥ 5.0.0&&< 5.3.38 | 5.3.38composer require contao/core-bundle:^5.3.38 |
| 🐘Packagist | contao/core-bundle | ≥ 5.4.0-RC1&&< 5.6.1 | 5.6.1composer require contao/core-bundle:^5.6.1 |
| 🐘Packagist | contao/contao | ≥ 5.0.0&&< 5.3.38 | 5.3.38composer require contao/contao:^5.3.38 |
| 🐘Packagist | contao/contao | ≥ 5.4.0-RC1&&< 5.6.1 | 5.6.1composer require contao/contao:^5.6.1 |
Affected Products
contaocontaoDetection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for contao/core-bundle, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update contao/core-bundle to 5.3.38 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2025-57758 is resolved across your whole dependency graph.
Workarounds
Put an independent control in front of the weakness: restrict the affected endpoint or interface to trusted networks, require an additional authentication factor or proxy-level check, and invalidate existing sessions and credentials in case the flaw has already been used.
Frequently Asked Questions
Is CVE-2025-57758 in your dependencies?
Find it across Packagist, including transitive dependencies.