ImpressCMS before 1.4.3 has plugins/preloads/autologin.php type confusion with resultant Authentication Bypass (!= instead of !==).
karmainsecurity.com/KIS-2022-01
packetstormsecurity.com/files/166393/ImpressCMS-1.4.2-Authentication-Bypass.html
seclists.org/fulldisclosure/2022/Mar/43
github.com/ImpressCMS/impresscms
github.com/ImpressCMS/impresscms/releases/tag/v1.4.3
hackerone.com/reports/1081986
nvd.nist.gov/vuln/detail/CVE-2021-26600