CVE-2026-53953

9.1 CRITICALpublic exploit available

Published 2026-10-01 · Updated 2026-10-05

AI risk analysis

Summary: The flaw allows an attacker to exploit the password reset endpoint to gain unauthorized access to the administrator account by generating and testing possible password candidates.
Exploitability: Exploitation is moderately hard as it requires generating and testing password candidates, but preconditions include access to the password reset endpoint and knowledge of an existing user's account.
Blast radius: If exploited, it could lead to full administrator account takeover, granting the attacker complete control over the GetSimple CMS instance.
Detection: No reliable host or network indicator is derivable from the published description.
Prioritized remediation: Upgrade to version 3.3.23 or later, as the vulnerability was fixed in this version.

auth-bypasswebcms

Analysis generated locally by qwen2.5:7b-instruct (no data left the box). AI-assisted — verify against primary sources before acting.

NVD description

GetSimple CMS is a content management system (CMS), and GetSimple CMS CE is the community edition of that CMS. In version 3.3.22, the password reset endpoint can be accessed without authentication. When a reset request is submitted for an existing user, the application generates a new temporary password and immediately stores its hash as the user's new password. The temporary password is generated using PHP rand() seeded with microtime(). Because this seed is time-based and has a limited effective search space, an attacker can generate possible reset password candidates. Since the admin login endpoint does not enforce rate limiting or account lockout, these candidates can be tested online until the correct password is found. Successful exploitation may lead to administrator account takeover. At time of publication, there are no publicly available patches.

CVSS vector

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

Weaknesses

CWE-338, CWE-640

Public exploit & PoC references

All references

Source data: NVD (nvd.nist.gov), public domain. Exploit-DB.ai adds local AI analysis for defensive use only.

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