CVE-2025-65602

A template injection vulnerability in the /vip/v1/file/save component of ChanCMS v3.3.4 allows attackers to execute arbitrary code via a crafted POST request

Critical · published December 10, 2025

CVSS v3.1
9.8
EPSS
1%
Percentile
44.6
In the wild
Unconfirmed
What it is

🔥 A template injection vulnerability in ChanCMS v3.3.4 leaves the door wide open for attackers to execute arbitrary code with just a crafted POST request! Think of it like a sneaky chef slipping a secret ingredient into your favorite dish without you knowing; suddenly, the meal can turn toxic! Just as you wouldn’t want that in your kitchen, you definitely don’t want this vulnerability in your web application. An attacker could inject malicious code that not only compromises your site but also allows them to take control of your server. This could lead to data theft, unauthorized access, or even the complete takeover of your website – a truly alarming scenario! 📉

Put simply

Think of it like a sneaky chef slipping a secret ingredient into your favorite dish without you knowing; suddenly, the meal can turn toxic! Just as you wouldn’t want that in your kitchen, you definitely don’t want this vulnerability in your web application. This critical template injection vulnerability in ChanCMS's /vip/v1/file/save endpoint allows attackers to send a specially crafted POST request that the server unwittingly executes, resulting in potential remote code execution.

What to do

An attacker could inject malicious code that not only compromises your site but also allows them to take control of your server. This could lead to data theft, unauthorized access, or even the complete takeover of your website – a truly alarming scenario! 📉 To remediate this vulnerability, update ChanCMS to the latest version immediately. Implement input validation and sanitization for all incoming requests to prevent such injections from being executed. Regularly audit your application for similar vulnerabilities. You've got this! By taking these steps, you'll be reinforcing your security and keeping the internet a safer place! 🛡️

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00539 · 44.6th percentile
Published
2025-12-10T00:00Z
EPSS history
Timeline
  • 10 DEC 00:00Z
    A template injection vulnerability in the /vip/v1/file/save component of ChanCMS v3.3.4 allows attackers to execute arbitrary code via a crafted POST request
    cvelistv5