Packagist prior to 1.2.11 contains a cross-site scripting vulnerability via microweber/microweber. User can escape the meta tag because the user doesn’t escape the double-quote in the $redirectUrl parameter when logging out.
View the template here CVE-2022-0678.yaml
References:
https://github.com/microweber/microweber/commit/2b8fa5aac31e51e2aca83c7ef5d1281ba2e755f8