CVE-2025-8341
📋 TL;DR
The Grafana Infinity datasource plugin contains a URL restriction bypass vulnerability that allows attackers to access unauthorized endpoints. This affects Grafana instances using the Infinity plugin with URL filtering configured. Attackers could potentially access internal or external resources that should be blocked.
💻 Affected Systems
- Grafana Infinity Datasource Plugin
⚠️ 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
Attacker accesses sensitive internal systems or data through bypassed URL restrictions, potentially leading to data exfiltration or further network compromise.
Likely Case
Unauthorized access to internal APIs or services that should be restricted, potentially exposing sensitive information or enabling SSRF attacks.
If Mitigated
Limited impact due to proper network segmentation and additional authentication layers, though URL filtering would be ineffective.
🎯 Exploit Status
Requires authenticated access to Grafana and knowledge of URL filtering configuration. Exploitation involves crafting specific URL patterns to bypass restrictions.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 3.4.1
Vendor Advisory: https://grafana.com/security/security-advisories/cve-2025-8341/
Restart Required: No
Instructions:
1. Access Grafana admin interface. 2. Navigate to Plugins section. 3. Find Infinity datasource plugin. 4. Update to version 3.4.1. 5. Verify update completed successfully.
🔧 Temporary Workarounds
Disable URL Filtering
allRemove URL restrictions from Infinity plugin configuration to eliminate bypass vulnerability
Edit Grafana datasource configuration to remove URL allow/deny lists for Infinity plugin
Network Segmentation
allImplement network controls to restrict Grafana server outbound connections
Configure firewall rules to limit Grafana server egress to only required endpoints
🧯 If You Can't Patch
- Implement strict network egress filtering for Grafana servers
- Monitor Infinity plugin usage and alert on unusual URL access patterns
🔍 How to Verify
Check if Vulnerable:
Check Infinity plugin version in Grafana admin interface. If version is below 3.4.1 and URL filtering is configured, the system is vulnerable.Check Version:
Check via Grafana UI: Admin -> Plugins -> Infinity datasource, or via API: GET /api/pluginsVerify Fix Applied:
Confirm Infinity plugin version shows 3.4.1 or higher in Grafana plugins section.📡 Detection & Monitoring
Log Indicators:
- Unusual URL patterns in Infinity plugin requests
- Access to URLs not in configured allow lists
- Failed URL restriction attempts
Network Indicators:
- Grafana server making unexpected outbound connections
- Requests to internal IP ranges from Grafana
SIEM Query:
source="grafana" AND ("infinity" OR "datasource") AND (url_contains OR request_uri) NOT IN allowed_urls