CVE-2025-27406
📋 TL;DR
This vulnerability in Icinga Reporting allows attackers to embed arbitrary JavaScript in report templates. When previewed, this enables attackers to act on behalf of the user; when printed to PDF, it allows acting on behalf of the headless browser. Affected systems are Icinga Web 2 installations using the reporting module versions 0.10.0 through 1.0.2.
💻 Affected Systems
- Icinga Web 2 Reporting 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
Full compromise of user sessions and headless browser privileges, potentially leading to data theft, privilege escalation, or lateral movement within the monitoring infrastructure.
Likely Case
Session hijacking, credential theft, and unauthorized access to monitoring data through cross-site scripting attacks.
If Mitigated
Limited impact with proper template review and access controls, potentially only affecting report generation functionality.
🎯 Exploit Status
Exploitation requires ability to create or modify report templates, which typically requires authenticated access to the reporting module.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.0.3
Vendor Advisory: https://github.com/Icinga/icingaweb2-module-reporting/security/advisories/GHSA-7qvq-54vm-r7hx
Restart Required: No
Instructions:
1. Backup current configuration. 2. Download version 1.0.3 from GitHub releases. 3. Replace the reporting module directory with the new version. 4. Clear any caching mechanisms. 5. Verify functionality.
🔧 Temporary Workarounds
Template Review and Sanitization
allManually review all report templates and remove any suspicious JavaScript or template settings that could embed arbitrary code.
🧯 If You Can't Patch
- Restrict access to template creation/modification to trusted administrators only
- Disable report preview functionality and PDF generation if not essential
🔍 How to Verify
Check if Vulnerable:
Check the reporting module version by examining the module directory or using Icinga Web 2's module management interface.Check Version:
Check the version in /usr/share/icingaweb2/modules/reporting/CHANGELOG.md or similar locationVerify Fix Applied:
Verify the reporting module version is 1.0.3 or higher and test template functionality to ensure JavaScript injection is prevented.📡 Detection & Monitoring
Log Indicators:
- Unusual template modifications
- Multiple failed template validation attempts
- Suspicious JavaScript in template content
Network Indicators:
- Unusual requests to report preview endpoints
- Suspicious PDF generation requests
SIEM Query:
Search for: 'template modification' AND 'reporting' OR 'preview' AND 'javascript' in web application logs