CVE-2023-53924 UliCMS 2023.1-sniffing-vicuna Remote Code Execution via Avatar Upload
Authenticated attackers can upload malicious PHP files via avatar upload to execute arbitrary code on the server.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2023-53924?
CVE-2023-53924 is a high-severity vulnerability in Ulicms, published on 17 Dec 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
UliCMS 2023.1-sniffing-vicuna contains a remote code execution vulnerability that allows authenticated attackers to upload PHP files with .phar extension during profile avatar upload. Attackers can trigger code execution by visiting the uploaded file's location, enabling system command execution through maliciously crafted avatar uploads.
Weakness: CWE-434
Which versions are affected by CVE-2023-53924?
It affects 1 product.
Products include Ulicms Ulicms.
How do I fix CVE-2023-53924?
No fix has been published for CVE-2023-53924 yet. Limit exposure of the affected software until one is available.
Is CVE-2023-53924 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-53924 exists.
Other vulnerabilities in Ulicms
- CVE-2023-53914 UliCMS 2023.1 Authentication Bypass via Mass Assignment Vulnerability
- CVE-2023-53923 UliCMS 2023.1 Privilege Escalation via Unauthenticated Admin Account Creation
- CVE-2020-12703 Cross-site scripting in n/a
- CVE-2020-12704 Cross-site scripting in n/a
- CVE-2019-11398 Cross-site scripting in n/a
Sources
Also known as GHSA-xrjv-cxq7-2pw3.