CVE-2025-11439
📋 TL;DR
This vulnerability allows unauthorized access to the /show/integrations endpoint in JhumanJ OpnForm up to version 1.9.3. Attackers can exploit this missing authorization flaw to potentially access sensitive integration data or functionality. All OpnForm installations up to version 1.9.3 are affected.
💻 Affected Systems
- JhumanJ OpnForm
📦 What is this software?
Opnform by Jhumanj
⚠️ Risk & Real-World Impact
Worst Case
Unauthorized access to sensitive integration configurations, potential data exposure, or unauthorized modification of integration settings
Likely Case
Unauthorized viewing of integration configurations and potentially sensitive data stored in integration settings
If Mitigated
Limited impact with proper network segmentation and access controls, though vulnerability remains present
🎯 Exploit Status
Exploit has been made public and remote exploitation is possible. Attack requires access to the vulnerable endpoint but no authentication.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Version after commit 11d97d78f2de2cb49f79baed6bde8b611ec1f384
Vendor Advisory: https://github.com/JhumanJ/OpnForm/pull/900/commits/11d97d78f2de2cb49f79baed6bde8b611ec1f384
Restart Required: No
Instructions:
1. Update OpnForm to version after commit 11d97d78f2de2cb49f79baed6bde8b611ec1f384
2. Apply the patch from GitHub pull request #900
3. Verify the fix by testing the /show/integrations endpoint
🔧 Temporary Workarounds
Network Access Restriction
allRestrict network access to the OpnForm instance using firewall rules
Endpoint Blocking
allBlock access to the /show/integrations endpoint using web server configuration
# For nginx: location /show/integrations { deny all; }
# For Apache: <Location /show/integrations> Require all denied </Location>
🧯 If You Can't Patch
- Implement strict network segmentation and firewall rules to limit access to OpnForm
- Deploy a web application firewall (WAF) with rules to block unauthorized access to the vulnerable endpoint
🔍 How to Verify
Check if Vulnerable:
Attempt to access /show/integrations endpoint without authentication. If accessible, system is vulnerable.Check Version:
Check OpnForm version in application settings or via package manager (e.g., composer show jhumanj/opnform)Verify Fix Applied:
Attempt to access /show/integrations endpoint without authentication. Should return 401/403 error after patch.📡 Detection & Monitoring
Log Indicators:
- Unauthorized access attempts to /show/integrations
- 401/403 errors for /show/integrations endpoint
Network Indicators:
- HTTP requests to /show/integrations without authentication headers
- Unusual traffic patterns to integration endpoints
SIEM Query:
source="opnform" AND (uri="/show/integrations" AND NOT (status=401 OR status=403))🔗 References
- https://docs.google.com/document/d/1GUjJA9vUbsXUngAv6ySsbCIhVynf8_djardLZYEDOe0/edit?tab=t.0#heading=h.reuyi9lwvpj
- https://github.com/JhumanJ/OpnForm/pull/900/commits/11d97d78f2de2cb49f79baed6bde8b611ec1f384
- https://vuldb.com/?ctiid.327376
- https://vuldb.com/?id.327376
- https://vuldb.com/?submit.666880
