CVE-2025-59832
📋 TL;DR
A stored cross-site scripting (XSS) vulnerability in Horilla HRMS allows low-privilege authenticated users to inject malicious JavaScript into ticket comments. When administrators view these comments, the script executes in their browser, potentially stealing session cookies and CSRF tokens. This affects all Horilla installations prior to version 1.4.0.
💻 Affected Systems
- Horilla HRMS
📦 What is this software?
Horilla by Horilla
⚠️ Risk & Real-World Impact
Worst Case
Administrator session hijacking leading to full system compromise, data exfiltration, and privilege escalation across the HRMS platform.
Likely Case
Session theft allowing attacker to impersonate administrators, access sensitive HR data, and perform unauthorized administrative actions.
If Mitigated
Limited impact with proper input validation and output encoding, though risk remains if JavaScript execution is allowed.
🎯 Exploit Status
Exploitation requires authenticated user access but is straightforward once access is obtained.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.4.0
Vendor Advisory: https://github.com/horilla-opensource/horilla/security/advisories/GHSA-8x78-6q9g-hv2h
Restart Required: Yes
Instructions:
1. Backup your Horilla installation and database. 2. Update to version 1.4.0 or later via git pull or package update. 3. Restart the Horilla application server. 4. Verify the update was successful.
🔧 Temporary Workarounds
Input Validation Filter
allImplement server-side input validation to sanitize HTML/JavaScript in ticket comments
Implement content security policy headers
Add input sanitization middleware
Content Security Policy
allDeploy CSP headers to restrict JavaScript execution from untrusted sources
Add 'Content-Security-Policy: script-src 'self'' to web server configuration
🧯 If You Can't Patch
- Disable ticket comment functionality for non-administrative users
- Implement web application firewall rules to block XSS payloads in ticket comments
🔍 How to Verify
Check if Vulnerable:
Check Horilla version via admin panel or by examining the application files for version markersCheck Version:
Check Horilla settings or view source for version informationVerify Fix Applied:
Test ticket comment functionality with XSS payloads like <script>alert('test')</script> and verify it's properly sanitized📡 Detection & Monitoring
Log Indicators:
- Unusual JavaScript patterns in ticket comments
- Multiple failed login attempts followed by ticket comment activity
Network Indicators:
- Unexpected outbound connections from admin sessions
- Cookie theft patterns in network traffic
SIEM Query:
source="horilla_logs" AND (message="*<script>*" OR message="*javascript:*")