Cross-site scripting (XSS) in Action messages on Avo
Date: 2024-01
Affected: rubygems/avo, rubygems/avo
Attack vector: xss
Category: vulnerability-disclosure
Severity: High
CVE: CVE-2024-22191
CVE-2024-22411
CWE: CWE-79
CVSS: 6.5 (CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L)

Avo is a framework to create admin panels for Ruby on Rails apps. In Avo 3 pre12, any HTML inside text that is passed to `error` or `succeed` in an `Avo::BaseAction` subclass will be rendered directly without sanitization in the toast/notification that appears in the UI on Action completion. A malicious user could exploit this vulnerability to trigger a cross site scripting attack on an unsuspecting user. This issue has been addressed in the 3.3.0 and 2.47.0 releases of Avo. Users are advised to upgrade.


Mitigations:

Architectural layers (MAESTRO):