CVE-2020-26799

A reflected cross-site scripting (XSS) vulnerability was discovered in index.php on Luxcal 4.5.2 which allows an unauthenticated attacker to steal other users'…

Critical · published July 21, 2025

CVSS v3.1
9.8
EPSS
1%
Percentile
49.7
In the wild
Unconfirmed
What it is

🚨 A sneaky reflected XSS vulnerability in Luxcal 4.5.2 is a game changer! An attacker can swoop in and steal user data without even breaking a sweat. 🔥 Think of it like a restaurant where anyone can slip a note onto the menu that tricks diners into ordering the wrong dish, resulting in chaos at the tables. That's what this XSS vulnerability allows attackers to do with user data! An attacker could exploit this vulnerability to hijack sessions, steal sensitive information, and cause absolute mayhem for users. Imagine someone accessing your private details without a trace, leaving victims in the lurch! It's a potential goldmine for malicious actors.

Put simply

Think of it like a restaurant where anyone can slip a note onto the menu that tricks diners into ordering the wrong dish, resulting in chaos at the tables. That's what this XSS vulnerability allows attackers to do with user data! This reflected XSS vulnerability allows an attacker to inject malicious scripts into the index.php page, which gets executed when unsuspecting users visit the page. In short, any unauthenticated user can manipulate the data flow and execute harmful scripts.

What to do

An attacker could exploit this vulnerability to hijack sessions, steal sensitive information, and cause absolute mayhem for users. Imagine someone accessing your private details without a trace, leaving victims in the lurch! It's a potential goldmine for malicious actors. Immediate steps: upgrade Luxcal to version 4.5.3 to patch this vulnerability, implement input validation to sanitize user inputs, and educate users on the dangers of untrusted links. Don't let this slip through the cracks! You've got this! If you take these steps, you'll be bolstering your defenses in no time. 🛡️

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
0.00633 · 49.7th percentile
Published
2025-07-21T00:00Z
EPSS history
Timeline
  • 21 JUL 00:00Z
    A reflected cross-site scripting (XSS) vulnerability was discovered in index.php on Luxcal 4.5.2 which allows an unauthenticated attacker to steal other users'…
    cvelistv5