CVE-2025-67910CWE-434unrestricted-file-upload

CVE-2025-67910

Critical · published January 8, 2026

CVSS v3.1
9.1
EPSS
0%
Percentile
33.8
In the wild
Unconfirmed
What it is

🚨 A simple file upload is the secret ticket to complete server control! With an unrestricted upload of dangerous file types, attackers can sneak in a web shell, striking a major blow to server security. 🔥 Think of your server as a restaurant kitchen. If you let anyone walk in and drop off their own ingredients without checking them, you might end up cooking with something toxic! In this case, no one is verifying what files can be uploaded, leaving the kitchen wide open for trouble. Once an attacker slips in a web shell, they can control your server like a puppeteer with strings—reading sensitive data, altering content, or worse, taking over completely! This could lead to devastating data breaches and a massive loss of trust from your users. It's like handing the keys to your restaurant to a stranger and letting them run the show!

Put simply

Think of your server as a restaurant kitchen. If you let anyone walk in and drop off their own ingredients without checking them, you might end up cooking with something toxic! In this case, no one is verifying what files can be uploaded, leaving the kitchen wide open for trouble. This vulnerability in Contentstudio allows unauthorized users to upload potentially harmful files, like web shells, without any restrictions. This means that dangerous files can be executed on the server, paving the way for total control.

What to do

Once an attacker slips in a web shell, they can control your server like a puppeteer with strings—reading sensitive data, altering content, or worse, taking over completely! This could lead to devastating data breaches and a massive loss of trust from your users. It's like handing the keys to your restaurant to a stranger and letting them run the show! Immediately patch your Contentstudio installation to version 1.3.8 or higher. Audit your file upload processes to ensure only safe file types can be uploaded. Implement checks that validate and sanitize uploads to keep your kitchen safe! You've got this! Stay vigilant, apply those patches, and your server will be secure in no time! 🛡️

The record
Technical detail
CVSS v3.1
9.1 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00407 · 33.8th percentile
Weakness
CWE-434 · Unrestricted Upload of File with Dangerous Type
Published
2026-01-08T15:15Z
References (1)
EPSS history
Timeline
  • 08 JAN 09:17Z
    WordPress Contentstudio plugin <= 1.3.7 - Arbitrary File Upload vulnerability
    cvelistv5