{"id":"GHSA-m8xh-cqc2-5q6f","aliases":["CVE-2021-26600"],"title":"Type Confusion in ImpressCMS","titleSource":"OSV","descriptionSource":"OSV","declaredSeverity":"CRITICAL","description":"ImpressCMS before 1.4.3 has plugins/preloads/autologin.php type confusion with resultant Authentication Bypass (!= instead of !==).","severity":"critical","score":9.8,"published":"2022-03-29T00:01:16.000Z","modified":"2023-11-08T04:05:21.668Z","withdrawn":false,"knownExploited":false,"affected":[{"ecosystem":"Packagist","name":"impresscms/impresscms","sources":[{"name":"OSV · GHSA-m8xh-cqc2-5q6f","url":"https://osv.dev/vulnerability/GHSA-m8xh-cqc2-5q6f"}],"ranges":[{"events":[{"introduced":"0"},{"fixed":"1.4.3"}],"type":"ECOSYSTEM"}],"versions":[],"fixed":["1.4.3"]}],"sourceAffected":[],"references":["https://nvd.nist.gov/vuln/detail/CVE-2021-26600","https://hackerone.com/reports/1081986","https://github.com/ImpressCMS/impresscms","https://github.com/ImpressCMS/impresscms/releases/tag/v1.4.3","http://karmainsecurity.com/KIS-2022-01","http://packetstormsecurity.com/files/166393/ImpressCMS-1.4.2-Authentication-Bypass.html","http://seclists.org/fulldisclosure/2022/Mar/43"],"sources":[{"name":"OSV","id":"GHSA-m8xh-cqc2-5q6f","modified":"2023-11-08T04:05:21.668002Z","url":"https://osv.dev/vulnerability/GHSA-m8xh-cqc2-5q6f"}],"assessments":[{"source":"OSV","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8}],"products":[],"remediation":[],"kev":{"status":"not-listed","checkedAt":"2026-10-28T09:15:31.408Z"},"coverage":[{"source":"NVD","status":"not-checked"},{"source":"GHSA","status":"not-checked"},{"source":"EUVD","status":"not-checked"},{"source":"EPSS","status":"not-checked"}],"evidence":[]}