# CVE-2023-53914: UliCMS 2023.1 Authentication Bypass via Mass Assignment Vulnerability

> Unauthenticated attackers can create admin accounts via mass assignment in UliCMS, leading to full system compromise.

- **Severity:** Critical 9.3 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 17 Dec 2025
- **Updated:** 7 Apr 2026
- **Also known as:** GHSA-7ff4-756p-256w

## What is CVE-2023-53914?

CVE-2023-53914 is a critical authentication bypass vulnerability in Ulicms, published on 17 Dec 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official 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 account with full system access.

Weakness: CWE-639 (Authorization Bypass Through User-Controlled Key)

## Which versions are affected by CVE-2023-53914?

It affects 1 product.


Products: Ulicms Ulicms.

## How do I fix CVE-2023-53914?

No fix has been published for CVE-2023-53914 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-53914 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-53914 exists.

## Other vulnerabilities in Ulicms

- [CVE-2023-53923](https://insights.sbomify.com/CVE-2023-53923/): UliCMS 2023.1 Privilege Escalation via Unauthenticated Admin Account Creation (critical 9.3)
- [CVE-2023-53924](https://insights.sbomify.com/CVE-2023-53924/): UliCMS 2023.1-sniffing-vicuna Remote Code Execution via Avatar Upload (high 8.7)
- [CVE-2020-12703](https://insights.sbomify.com/CVE-2020-12703/): Cross-site scripting in n/a (medium 6.1)
- [CVE-2020-12704](https://insights.sbomify.com/CVE-2020-12704/): Cross-site scripting in n/a (medium 6.1)
- [CVE-2019-11398](https://insights.sbomify.com/CVE-2019-11398/): Cross-site scripting in n/a (medium 6.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-53914 and fix it if it is affected.

What it is: CVE-2023-53914 is a critical authentication bypass vulnerability in Ulicms, published on 17 Dec 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-53914 exists.

Affected product: Ulicms. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2023-53914/ (Markdown: https://insights.sbomify.com/CVE-2023-53914/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-53914
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-53914
- OSV: https://osv.dev/vulnerability/CVE-2023-53914

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-53914/
Summaries are generated and may contain mistakes; the official description above is the record.