CVE-2024-54996
📋 TL;DR
MonicaHQ v4.1.2 contains authenticated client-side injection vulnerabilities in the title and description parameters of the reminders creation feature. This allows authenticated attackers to inject malicious scripts that execute in victims' browsers when viewing affected pages. All users running MonicaHQ v4.1.2 are affected.
💻 Affected Systems
- MonicaHQ
📦 What is this software?
Monica by Monicahq
⚠️ Risk & Real-World Impact
Worst Case
Authenticated attackers could steal session cookies, perform account takeover, redirect users to malicious sites, or perform actions on behalf of victims.
Likely Case
Attackers with valid credentials could perform cross-site scripting attacks against other users, potentially stealing sensitive data or performing unauthorized actions.
If Mitigated
With proper input validation and output encoding, malicious scripts would be neutralized before reaching victims' browsers.
🎯 Exploit Status
Requires authenticated access to the application and knowledge of the vulnerable endpoints.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: v4.1.3 or later
Vendor Advisory: https://github.com/monicahq/monica/releases
Restart Required: No
Instructions:
1. Backup your MonicaHQ installation and database. 2. Update to MonicaHQ v4.1.3 or later via git pull or package update. 3. Verify the update completed successfully.
🔧 Temporary Workarounds
Input Validation Filter
allImplement server-side input validation to sanitize title and description parameters
Implement input sanitization in /people/ID/reminders/create endpoint
🧯 If You Can't Patch
- Restrict access to the reminders creation feature to trusted users only
- Implement a web application firewall (WAF) with XSS protection rules
🔍 How to Verify
Check if Vulnerable:
Check if running MonicaHQ v4.1.2 by examining version files or admin panelCheck Version:
Check .env file or admin dashboard for version informationVerify Fix Applied:
Verify installation is running v4.1.3 or later and test the reminders creation feature with test payloads📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to /people/*/reminders/create with script tags or JavaScript payloads
Network Indicators:
- HTTP requests containing script injections in title or description parameters
SIEM Query:
source="monica_logs" AND (uri="/people/*/reminders/create" AND (body CONTAINS "<script>" OR body CONTAINS "javascript:"))