CVE-2021-26600

CRITICAL
Published Mar 28, 20224y ago · Modified Jun 17, 20262w ago
9.8 CVSS 3.1
Critical
Find Similar
Published Mar 28, 2022 4y ago
Last Modified Jun 17, 2026 2w ago

Description

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

CVSS Details

Base Score
9.8
Exploitability
3.9
Impact
5.9
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

No active exploitation signals — not in CISA KEV and no EPSS score yet.

Exploit & Patch Status
Public Exploit Known
No Patch Available

Weaknesses 1

CWE-843

Affected Products 1

VendorProductVersionRange
impresscmsimpresscms* <1.4.3

References 4

  • karmainsecurity.com http://karmainsecurity.com/KIS-2022-01
    Third Party Advisory
  • packetstormsecurity.com http://packetstormsecurity.com/files/166393/ImpressCMS-1.4.2-Authentication-Bypass.html
    ExploitThird Party AdvisoryVDB Entry
  • seclists.org http://seclists.org/fulldisclosure/2022/Mar/43
    ExploitMailing ListThird Party Advisory
  • hackerone.com https://hackerone.com/reports/1081986
    ExploitThird Party Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.