Unrestricted file upload allowed the attacker to manipulate the request and bypass the protection of HTML files using a text file. Stored XSS may be obtained.
References:- https://nvd.nist.gov/vuln/detail/CVE-2022-1811
 - https://github.com/publify/publify/commit/0fb6b027fbaf17f6a6551f2148482a03eac12927
 - https://huntr.dev/bounties/4d97f665-c9f1-4c38-b774-692255a7c44c
 - https://github.com/rubysec/ruby-advisory-db/blob/master/gems/publify_core/CVE-2022-1811.yml
 - https://github.com/advisories/GHSA-3hwx-c6cp-q972