CVE-2025-34111CWE-20CWE-306CWE-434

Tiki Wiki <= 15.1 ELFinder Unauthenticated File Upload RCE

Critical · published July 15, 2025

CVSS v4.0
9.3
EPSS
3%
Percentile
85.1
In the wild
Unconfirmed
What it is

🔥 An unauthenticated file upload vulnerability in Tiki Wiki CMS could let attackers plant malicious PHP scripts with a simple POST request! Think of it like a restaurant that lets anyone in the kitchen without checking their credentials — they could whip up anything, including a nasty surprise in the dish everyone eats! With this vulnerability, an attacker could upload a malicious script that runs on the server, giving them full control over the web environment. This means they could read sensitive data, modify existing files, or even launch further attacks — a nightmare for any site owner!

Put simply

Think of it like a restaurant that lets anyone in the kitchen without checking their credentials — they could whip up anything, including a nasty surprise in the dish everyone eats! This vulnerability allows remote attackers to bypass file type validation in Tiki Wiki CMS's ELFinder component, enabling them to upload executable PHP scripts through a vulnerable endpoint, specifically connector.minimal.php.

What to do

With this vulnerability, an attacker could upload a malicious script that runs on the server, giving them full control over the web environment. This means they could read sensitive data, modify existing files, or even launch further attacks — a nightmare for any site owner! Immediately upgrade Tiki Wiki CMS to version 15.2 or later to close this critical hole. Additionally, implement strict file type checks and restrict access to the ELFinder interface to trusted users only. Don't forget to review your server configurations to enhance overall security! You've got this! Secure your Tiki Wiki installation today and take a step towards being a true security hero! 🛡️

The record
Technical detail
CVSS v4.0
9.3 · CRITICAL
Vector
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
EPSS
0.02574 · 85.1th percentile
Weaknesses
CWE-20 · Improper Input Validation; CWE-306 · Missing Authentication for Critical Function; CWE-434 · Unrestricted Upload of File with Dangerous Type
Published
2025-07-15T13:09Z
EPSS history
Timeline
  • 15 JUL 13:09Z
    Tiki Wiki <= 15.1 ELFinder Unauthenticated File Upload RCE
    cvelistv5