CVE-2025-8529
📋 TL;DR
This critical vulnerability in cloudfavorites favorites-web allows attackers to perform server-side request forgery (SSRF) attacks by manipulating the 'url' parameter in the getCollectLogoUrl function. Attackers can exploit this remotely to make the server send unauthorized requests to internal or external systems. All users running favorites-web versions up to 1.3.0 are affected.
💻 Affected Systems
- cloudfavorites favorites-web
⚠️ 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 access internal services, exfiltrate sensitive data, or pivot to other systems within the network by making the vulnerable server send requests to internal resources.
Likely Case
Attackers will scan for and exploit this vulnerability to access metadata services, internal APIs, or perform port scanning of internal networks from the vulnerable server.
If Mitigated
With proper network segmentation and egress filtering, the impact is limited to the server itself and any directly accessible internal services.
🎯 Exploit Status
The exploit has been publicly disclosed and requires minimal technical skill to execute.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.3.1 or later
Vendor Advisory: https://github.com/cloudfavorites/favorites-web/issues/134
Restart Required: Yes
Instructions:
1. Update to version 1.3.1 or later from the official repository. 2. Restart the application server. 3. Verify the fix by checking the version and testing the vulnerable endpoint.
🔧 Temporary Workarounds
Input Validation Filter
allImplement input validation to restrict URL parameters to allowed domains only
Implement URL whitelisting in the getCollectLogoUrl function
Network Segmentation
allRestrict outbound network access from the vulnerable server
Configure firewall rules to block outbound HTTP/HTTPS from the application server except to required services
🧯 If You Can't Patch
- Implement strict egress filtering to prevent the server from accessing internal network resources
- Deploy a web application firewall (WAF) with SSRF protection rules
🔍 How to Verify
Check if Vulnerable:
Check if running favorites-web version 1.3.0 or earlier and if the getCollectLogoUrl endpoint is accessibleCheck Version:
Check application configuration or build files for version informationVerify Fix Applied:
Verify version is 1.3.1 or later and test the vulnerable endpoint with SSRF payloads to confirm they are blocked📡 Detection & Monitoring
Log Indicators:
- Unusual outbound HTTP requests from the application server
- Requests to internal IP addresses or metadata services
Network Indicators:
- HTTP requests from the application server to unexpected internal or external destinations
SIEM Query:
source_ip=application_server AND (dest_ip=169.254.169.254 OR dest_ip=metadata.google.internal OR dest_ip IN internal_ranges)