CVE-2025-51989
📋 TL;DR
An HTML injection vulnerability in Evolution Consulting's HRmaster module v235 allows attackers to inject malicious HTML tags into the 'keresztnév' (firstname) field during registration. This injected content is then included in emails sent to unregistered addresses, enabling phishing attacks. Organizations using the vulnerable HRmaster module are affected.
💻 Affected Systems
- Evolution Consulting Kft. HRmaster module
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Attackers could craft convincing phishing emails that appear legitimate, potentially leading to credential theft, malware installation, or further network compromise against recipients.
Likely Case
Phishing campaigns targeting HR personnel or other employees with malicious links or forms that steal credentials or deliver malware.
If Mitigated
Limited impact with proper email filtering, user awareness training, and input validation preventing successful injection.
🎯 Exploit Status
Exploitation requires access to the registration interface; proof-of-concept details are available in the GitHub repository.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Not available
Restart Required: No
Instructions:
Check vendor websites (evolution.com, hrmaster.com, hrmaster.hu, evolution-consulting.hu) for updates or patches; no official fix documented at this time.
🔧 Temporary Workarounds
Input Validation and Sanitization
allImplement server-side validation to strip or encode HTML tags from the 'keresztnév' field before processing.
Email Content Filtering
allConfigure email systems to filter or block HTML content in outgoing emails from the HRmaster module.
🧯 If You Can't Patch
- Disable the registration interface if not essential, or restrict access to trusted IP addresses only.
- Monitor outgoing emails for suspicious HTML patterns and alert on anomalies.
🔍 How to Verify
Check if Vulnerable:
Test by entering HTML tags (e.g., <script>alert('test')</script>) into the 'keresztnév' field during registration and check if they appear in the resulting email.Check Version:
Check the HRmaster module version in the application interface or configuration files; specific command depends on deployment.Verify Fix Applied:
Repeat the test after applying fixes; HTML tags should be encoded or removed in the email output.📡 Detection & Monitoring
Log Indicators:
- Unusual registration attempts with special characters or HTML tags in the 'keresztnév' field
- Increased email sending from the HRmaster module
Network Indicators:
- Outgoing emails with unexpected HTML content from the HRmaster system
SIEM Query:
Search for logs containing 'keresztnév' field with characters like <, >, or script tags in registration events.