CVE-2021-37626
Published:August 11, 2021
Updated:September 21, 2026
Contao is an open source CMS that allows you to create websites and scalable web applications. In affected versions it is possible to load PHP files by entering insert tags in the Contao back end. Installations are only affected if they have untrusted back end users who have the rights to modify fields that are shown in the front end. Update to Contao 4.4.56, 4.9.18 or 4.11.7 to resolve. If you cannot update then disable the login for untrusted back end users.
Affected Packages
contao/core-bundle (PHP):
Affected version(s) >=4.10.0 <4.11.7Fix Suggestion:
Update to version 4.11.7contao/core-bundle (PHP):
Affected version(s) >=4.0.0 <4.4.56Fix Suggestion:
Update to version 4.4.56contao/contao (PHP):
Affected version(s) >=4.0.0 <4.4.56Fix Suggestion:
Update to version 4.4.56contao/contao (PHP):
Affected version(s) >=4.10.0 <4.11.7Fix Suggestion:
Update to version 4.11.7contao/contao (PHP):
Affected version(s) >=4.5.0 <4.9.18Fix Suggestion:
Update to version 4.9.18contao/core-bundle (PHP):
Affected version(s) >=4.5.0 <4.9.18Fix Suggestion:
Update to version 4.9.18Related Resources (6)
Do you need more information?
Contact UsCVSS v4
Base Score:
8.6
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
HIGH
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
7.2
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Weakness Type (CWE)
Improper Control of Generation of Code ('Code Injection')
EPSS
Base Score:
1.25