CVE-2025-66561CWE-79cross-site-scripting

CVE-2025-66561

High · published December 5, 2025

CVSS v3.1
7.3
EPSS
0%
Percentile
8.0
In the wild
Unconfirmed
What it is

⚡ A crafty JavaScript file upload is all it takes to unleash havoc! Before version 2025.102, SysReptor had a Stored XSS vulnerability that lets logged-in users execute malicious scripts on their peers. 😱 Think of it like a restaurant where a customer can slip a toxic ingredient into the kitchen's supply — suddenly, everyone's meal is at risk just because one sneaky person found a way to mix in their own poison! An attacker could upload a malicious JavaScript file, leading to unauthorized actions in the context of other users. This could mean stealing sensitive information, hijacking accounts, or spreading further attacks, making your pentesting reports a playground for cyber mischief.

Put simply

Think of it like a restaurant where a customer can slip a toxic ingredient into the kitchen's supply — suddenly, everyone's meal is at risk just because one sneaky person found a way to mix in their own poison! This Stored XSS vulnerability allows authenticated users to inject malicious JavaScript into the application, affecting other logged-in users. The JavaScript runs within their browsers, potentially leading to data theft and account compromise.

What to do

An attacker could upload a malicious JavaScript file, leading to unauthorized actions in the context of other users. This could mean stealing sensitive information, hijacking accounts, or spreading further attacks, making your pentesting reports a playground for cyber mischief. Upgrade SysReptor to version 2025.102 immediately to patch this vulnerability. Additionally, review user permissions and implement strict content validation to prevent future exploits. Don't forget to educate users on the risks of uploading untrusted files! You've got this! By following these steps, you’ll protect your pentesting reports and keep your users safe! 🛡️

The record
Technical detail
CVSS v3.1
7.3 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N
CVSS v4.0
Not supplied
EPSS
0.00188 · 8.0th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2025-12-05T04:15Z
Affected products (1)
ProductVersionsFixed in
syslifters/sysreptor< 2025.1022025.102
References (1)
EPSS history
Timeline
  • 04 DEC 22:27Z
    SysReptor Vulnerable to an Authenticated Stored Cross-Site Scripting (XSS)
    cvelistv5