CVE-2025-54336

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CVSS 3.1

9.8 critical

EPSS

<1%p42

Published

Aug 19, 2025 (Aug 19, 2025)

Modified

Jun 17, 2026

Description

In Plesk Obsidian 18.0.70, _isAdminPasswordValid uses an == comparison. Thus, if the correct password is "0e" followed by any digit string, then an attacker can login with any other string that evaluates to 0.0 (such as the 0e0 string). This occurs in admin/plib/LoginManager.php.

Weakness: CWE-697
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

NVD CVE.org GitHub PoCs EPSS (0.5%)

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