CVE-2025-48205
📋 TL;DR
The sr_feuser_register extension for TYPO3 contains an Insecure Direct Object Reference vulnerability that allows attackers to access or modify user registration data without proper authorization. This affects all TYPO3 installations using sr_feuser_register extension versions through 12.4.8. Attackers could potentially manipulate user accounts or registration processes.
💻 Affected Systems
- TYPO3 sr_feuser_register extension
⚠️ 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 modify or delete user accounts, manipulate registration data, or potentially escalate privileges by accessing administrative functions through manipulated object references.
Likely Case
Unauthorized access to user registration data, allowing attackers to view or modify personal information of registered users.
If Mitigated
Limited impact with proper access controls and input validation in place, though the vulnerability would still exist at the code level.
🎯 Exploit Status
Exploitation requires some understanding of the extension's object reference system but is technically straightforward once identified.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 12.4.9 or later
Vendor Advisory: https://typo3.org/security/advisory/typo3-ext-sa-2025-008
Restart Required: No
Instructions:
1. Update the sr_feuser_register extension to version 12.4.9 or later via TYPO3 Extension Manager
2. Clear all caches in TYPO3 backend
3. Verify the extension version in Extension Manager
🔧 Temporary Workarounds
Disable sr_feuser_register extension
allTemporarily disable the vulnerable extension until patching is possible
typo3cms extension:deactivate sr_feuser_register
Implement additional access controls
allAdd custom access control checks in user registration controllers
🧯 If You Can't Patch
- Disable the sr_feuser_register extension immediately
- Implement web application firewall rules to block suspicious object reference patterns
🔍 How to Verify
Check if Vulnerable:
Check Extension Manager in TYPO3 backend for sr_feuser_register version. If version is 12.4.8 or earlier, system is vulnerable.Check Version:
typo3cms extension:list | grep sr_feuser_registerVerify Fix Applied:
Verify sr_feuser_register extension version is 12.4.9 or later in TYPO3 Extension Manager.📡 Detection & Monitoring
Log Indicators:
- Unusual user registration modifications
- Failed authorization attempts on user registration endpoints
- Suspicious parameter values in registration requests
Network Indicators:
- HTTP requests with manipulated object IDs in registration endpoints
- Unusual patterns in user registration API calls
SIEM Query:
web_logs WHERE (url CONTAINS '/index.php?eID=tx_srfeuserregister' OR url CONTAINS 'sr_feuser_register') AND (params CONTAINS 'uid' OR params CONTAINS 'id') AND status_code = 200