CVE-2021-37627
Published:August 11, 2021
Updated:September 21, 2026
Contao is an open source CMS that allows creation of websites and scalable web applications. In affected versions it is possible to gain privileged rights in the Contao back end. Installations are only affected if they have untrusted back end users who have access to the form generator. All users are advised to update to Contao 4.4.56, 4.9.18 or 4.11.7. As a workaround users may disable the form generator or disable the login for untrusted back end users.
Affected Packages
contao/contao (PHP):
Affected version(s) >=4.5.0 <4.9.18Fix Suggestion:
Update to version 4.9.18contao/contao (PHP):
Affected version(s) >=4.10.0 <4.11.7Fix Suggestion:
Update to version 4.11.7contao/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) >=4.5.0 <4.9.18Fix Suggestion:
Update to version 4.9.18contao/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 4.4.56Related Resources (6)
Do you need more information?
Contact UsCVSS v4
Base Score:
8.9
Attack Vector
NETWORK
Attack Complexity
HIGH
Attack Requirements
NONE
Privileges Required
HIGH
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
HIGH
Subsequent System Integrity
HIGH
Subsequent System Availability
HIGH
CVSS v3
Base Score:
8
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
HIGH
User Interaction
NONE
Scope
CHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Weakness Type (CWE)
Improper Privilege Management
EPSS
Base Score:
1.02