CVE-2021-26600

9.8 criticalEPSS 5.6%

Critical (9.8) in impresscms impresscms. EPSS 5.6% chance of exploitation in the next 30 days.

ImpressCMS before 1.4.3 has plugins/preloads/autologin.php type confusion with resultant Authentication Bypass (!= instead of !==).

Severity

9.8 critical

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS: 5.6% chance of exploitation in the next 30 days; higher than 92% of CVEs (scores of 2026-10-31)
CWE: CWE-843
Published: 2022-03-28
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19