Arbitrary file upload in Tinywebgallery
CVE-2023-53922
TinyWebGallery v2.5 contains a remote code execution vulnerability in the admin upload functionality that allows unauthenticated attackers to upload malicious PHP files. Attackers can upload .phar files with embedded system commands to execute arbitrary code on the server by accessing the uploaded file's URL.
Vulnerability class: Unrestricted File Upload
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.011 (64.5th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 64th percentile — 64.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.011 · newest: 0.011 · change: +0.000
Affected products
- Tinywebgallery — versions 2.5
Weakness classification (CWE)
References
- ExploitDB-51443 (Exploit, exploit, Third Party Advisory, VDB Entry)
- Official Product Webpage (Product, product)
- VulnCheck Advisory: TinyWebGallery v2.5 Remote Code Execution via Unrestricted File Upload (Exploit, Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2023-53922?
- CVE-2023-53922 is a critical-severity vulnerability in Tinywebgallery, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 9.8/10. Published 2025-12-17.
- How severe is CVE-2023-53922?
- Critical severity. CVSS v3 base score is 9.8 out of 10.