High severity · published Aug 11, 2021
CVE-2021-37627
Contao is an open source CMS that allows creation of websites and scalable web applications
7.2
CVSS
1%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
High
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.0% · higher than 63% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CO
Contao · Contao
4.4.0 before 4.4.56; 4.9.0 before 4.9.18; 4.11.0 before 4.11.7; 4.0.0; 4.1.0; 4.2.0; +6 more · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-37627
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-37627
Vendor Advisory
https://contao.org/en/security-advisories/privilege-escalation-with-the-form-generator.html
Third Party Advisory
https://github.com/contao/contao/security/advisories/GHSA-hq5m-mqmx-fw6m
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