{"cve":"CVE-2021-26600","nvd":{"published":"2022-03-28T01:15:06.927","modified":"2026-06-17T03:43:32.703","status":"Modified","description":"ImpressCMS before 1.4.3 has plugins/preloads/autologin.php type confusion with resultant Authentication Bypass (!= instead of !==).","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8},"cwes":["CWE-843"],"references":["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","https://hackerone.com/reports/1081986","http://karmainsecurity.com/KIS-2022-01"],"products":["impresscms:impresscms"],"source":"nvd","synced_at":"2026-10-19T21:29:06.454770966+00:00"},"epss":{"cve":"CVE-2021-26600","score":0.0563,"percentile":0.92946,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}