Contao cross site scripting vulnerability via input unit widget
CVE-2023-36806

6.5MEDIUM

Key Information:

Vendor

Contao

Status
Contao
Vendor
CVE Published:
25 July 2023

What is CVE-2023-36806?

Contao is an open source content management system. Starting in version 4.0.0 and prior to versions 4.9.42, 4.13.28, and 5.1.10, it is possible for untrusted backend users to inject malicious code into headline fields in the back end, which will be executed both in the element preview (back end) and on the website (front end). Installations are only affected if there are untrusted back end users who have the rights to modify headline fields, or other fields using the input unit widget. Contao 4.9.42, 4.13.28, and 5.1.10 have a patch for this issue. As a workaround, disable the login for all untrusted back end users.

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Deploy the Patch

Affected Version(s)

contao >= 4.0.0, < 4.9.42 < 4.0.0, 4.9.42

contao >= 4.10.0, < 4.13.28 < 4.10.0, 4.13.28

contao >= 5.0.0, < 5.1.10 < 5.0.0, 5.1.10

References

https://github.com/contao/contao/security/advisories/GHSA...
x_refsource_CONFIRM
https://github.com/contao/contao/commit/5c9aff32cfc1f7dc4...
x_refsource_MISC
https://github.com/contao/contao/commit/c98585d36baa25fda...
x_refsource_MISC

CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
Required
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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