Description
Contao is an Open Source CMS. In versions starting from 5.0.0 and prior to 5.3.38 and 5.6.1, the table access voter in the back end doesn't check if a user is allowed to access the corresponding module. This issue has been patched in versions 5.3.38 and 5.6.1. A workaround involves not relying solely on the voter and additionally to check USER_CAN_ACCESS_MODULE.
References (3)
Core 3
Core References
Third Party Advisory x_refsource_confirm
https://github.com/contao/contao/security/advisories/GHSA-7m47-r75r-cx8v
Patch x_refsource_misc
https://github.com/contao/contao/commit/3f05c603e1c94d34819f837f060df5d66447d0d7
Vendor Advisory x_refsource_misc
https://contao.org/en/security-advisories/improper-access-control-in-the-back-end-voters
Scores
CVSS v3
4.3
EPSS
0.0004
EPSS Percentile
13.5%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-284
Status
published
Products (3)
contao/contao
5.0.0 - 5.3.38Packagist
contao/contao
5.3.0 - 5.3.38
contao/core-bundle
5.0.0 - 5.3.38Packagist
Published
Aug 28, 2025
Tracked Since
Feb 18, 2026