Unauthenticated administrator creation via exposed UserController dispatch
Published Dec 17, 2025 · Updated Dec 17, 2025
Missing authorization in UliCMS 2023.1 allows remote attackers to create administrator accounts through the UserController endpoint. The index.php dispatcher accepts an unauthenticated form POST that selects UserController::create and honors group_id=1 and admin=1. No existing account or user interaction is required, and the new account receives full administrative access to the CMS.
Summary
What happened
Missing authorization in UliCMS 2023.1 allows remote attackers to create administrator accounts through the UserController endpoint. The index.php dispatcher accepts an unauthenticated form POST that selects UserController::create and honors group_id=1 and admin=1. No existing account or user interaction is required, and the new account receives full administrative access to the CMS.
The record
- CVE
- CVE-2023-53923
- Published
- Dec 17, 2025
- Updated
- Dec 17, 2025
- Vendor
- UliCMS
- Product
- UliCMS
- Classifications
- CWE-862, T1136
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Dec 17, 2025CVE publishedPublication date reported by the CVE source.
- Dec 17, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
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- Affected versionversion=2023.1
What conditions does exploitation require?
What is affected?
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Public exploit references
- Ulicms 2023.1 sniffing-vicuna privilege escalation exploitfunctional · demonstrated
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Technologies
Your stack
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Your stack
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