Cyber Posture

CVE-2023-53914

CriticalPublic PoC

Published: 17 December 2025

Published
17 December 2025
Modified
24 December 2025
KEV Added
—
Patch
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CVSS Score 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.0176 82.7th percentile
Risk Priority 21 60% EPSS · 20% KEV · 20% CVSS

Description

UliCMS 2023.1 contains an authentication bypass vulnerability that allows unauthenticated attackers to create admin users through mass assignment in the UserController. Attackers can send a crafted POST request to the admin index.php endpoint with specific parameters to generate an administrative…

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account with full system access.

Mitigating Controls (NIST 800-53 r5)AI

AC-14 Permitted Actions Without Identification or Authentication good match
prevent

Prohibits unauthorized actions like admin user creation without identification and authentication, directly preventing the exploitation of this unauthenticated bypass.

SI-10 Information Input Validation good match
prevent

Requires validation of inputs to the UserController, mitigating mass assignment that allows setting administrative privileges via crafted POST parameters.

AC-2 Account Management good match
prevent

Mandates managed processes for account creation with approvals, preventing unauthenticated generation of administrative accounts.

Security SummaryAI

CVE-2023-53914 is an authentication bypass vulnerability in UliCMS 2023.1, caused by mass assignment in the UserController. This flaw allows unauthenticated attackers to create administrative users by sending a crafted POST request to the admin index.php endpoint with specific parameters, granting full system access. The vulnerability is classified under CWE-639 and carries a CVSS v3.1 base score of 9.8 (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H), reflecting its critical severity.

Unauthenticated attackers with network access can exploit this vulnerability without privileges or user interaction. By crafting and submitting the POST request, they can generate a new administrative account, achieving complete control over the UliCMS instance, including high impacts on confidentiality, integrity, and availability.

Advisories such as the VulnCheck report and Exploit-DB entry (51486) document the vulnerability, including proof-of-concept exploits demonstrating the mass assignment technique. The archived UliCMS site provides additional context on the affected software.

Details

CWE(s)
CWE-639

Affected Products

ulicms
ulicms
2023.1

MITRE ATT&CK Enterprise TechniquesAI

T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
attack.mitre.org →
Why these techniques?

The vulnerability allows unauthenticated attackers to exploit a public-facing web application (UliCMS admin endpoint) via crafted POST requests, directly mapping to T1190: Exploit Public-Facing Application.

Confidence: HIGH · MITRE ATT&CK Enterprise v19.0

References