CVE-2023-53868CWE-434

Coppermine Gallery 1.6.25 Remote Code Execution via Plugin Upload

High · published December 15, 2025

CVSS v4.0
8.7
EPSS
1%
Percentile
57.8
In the wild
Unconfirmed
What it is

⚡ A crafty upload exploit is here! Authenticated attackers can slip malicious PHP files into Coppermine Gallery 1.6.25 through the plugin manager — it’s like inviting a thief to install a backdoor in your home! 🔥 Imagine a hotel where guests can freely change their own room locks. An attacker could 'check in' and place a hidden key under the mat, allowing them back inside anytime without permission! This vulnerability lets attackers upload and execute their scripts, gaining total control over the system. With this flaw, an attacker can execute arbitrary commands and run any code they desire on the server. This means they could manipulate files, steal data, or even take full control of the server itself — absolutely devastating!

Put simply

Imagine a hotel where guests can freely change their own room locks. An attacker could 'check in' and place a hidden key under the mat, allowing them back inside anytime without permission! This vulnerability lets attackers upload and execute their scripts, gaining total control over the system. This vulnerability exists in the Coppermine Gallery due to improper handling of uploaded files, allowing authenticated users to upload a zipped PHP script that the server unwittingly executes as a plugin.

What to do

With this flaw, an attacker can execute arbitrary commands and run any code they desire on the server. This means they could manipulate files, steal data, or even take full control of the server itself — absolutely devastating! To protect your system, update Coppermine Gallery to version 1.6.26 or later immediately. Additionally, restrict file uploads and ensure proper validations for file types to keep your application secure. You’ve got this! By taking these steps, you’ll lock down your gallery and keep those pesky invaders out! 🛡️

The record
Technical detail
CVSS v4.0
8.7 · HIGH
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
EPSS
0.00850 · 57.8th percentile
Weakness
CWE-434 · Unrestricted Upload of File with Dangerous Type
Published
2025-12-15T20:22Z
EPSS history
Timeline
  • 15 DEC 20:22Z
    Coppermine Gallery 1.6.25 Remote Code Execution via Plugin Upload
    cvelistv5