PrestaShop some attribute not escaped in Validate::isCleanHTML method
Date: 2024-01
Affected: composer/prestashop/prestashop, composer/prestashop/prestashop
Attack vector: xss
Category: vulnerability-disclosure
Severity: High
CVE: CVE-2024-21627
CWE: CWE-20
CWE-79
CVSS: 8.1 (CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:N)

### Description Some event attributes are not detected by the isCleanHTML method ### Impact Some modules using the isCleanHTML method could be vulnerable to xss ### Patches 8.1.3, 1.7.8.11 ### Workarounds The best workaround is to use the `HTMLPurifier` library to sanitize html input coming from users. The library is already available as a dependency in the PrestaShop project. Beware though that in legacy object models, fields of `HTML` type will call `isCleanHTML`. ### Reporters Reported by Antonio Russo (@Antonio-R1 on GitHub) and Antonio Rocco Spataro (@antoniospataro on GitHub).


Mitigations:

Architectural layers (MAESTRO):