CVE-2023-36806
Contao cross site scripting vulnerability via input unit widget
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Description
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.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
- https://github.com/contao/contao/commit/5c9aff32cfc1f7dc452a045862ac2f86a6b9b4b4
- https://github.com/contao/contao/commit/c98585d36baa25fda69c062421e7e7eadc53c82b
- https://github.com/contao/contao/commit/ccb64c777eb0f9c0e6490c9135d80e915d37cd32
- https://github.com/contao/contao/security/advisories/GHSA-4gpr-p634-922x
References (5)
SSVC — Action Prioritization
SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.
CVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- LOW
- User Interaction
- REQUIRED
- Scope
- CHANGED
- Confidentiality
- LOW
- Integrity
- LOW
- Availability
- NONE
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