CVE-2026-23843
📋 TL;DR
This CVE describes an Insecure Direct Object Reference (IDOR) vulnerability in the teklifolustur_app PHP application. Authenticated users can manipulate the offer_id parameter to access quotes belonging to other users, violating data confidentiality. All users of affected versions are impacted.
💻 Affected Systems
- teklifolustur_app
⚠️ 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
Mass data breach where all user quotes are exposed to any authenticated attacker, potentially revealing sensitive client information, pricing data, and business relationships.
Likely Case
Targeted data theft where attackers access specific competitors' or targets' quotes to gain business intelligence or steal client information.
If Mitigated
Minimal impact with proper authorization checks ensuring users can only access their own data.
🎯 Exploit Status
Simple parameter manipulation attack requiring only authenticated access.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Commit dd082a134a225b8dcd401b6224eead4fb183ea1c
Vendor Advisory: https://github.com/sibercii6-crypto/teklifolustur_app/security/advisories/GHSA-6h9r-mmg3-cg7m
Restart Required: No
Instructions:
1. Pull latest code from repository. 2. Apply commit dd082a134a225b8dcd401b6224eead4fb183ea1c. 3. Deploy updated code to production.
🔧 Temporary Workarounds
Web Application Firewall Rule
allBlock suspicious offer_id parameter manipulation patterns
Session-based Access Control
allImplement middleware to validate user ownership before serving offer data
🧯 If You Can't Patch
- Implement application-level authorization checks in all offer-related endpoints
- Monitor for unusual access patterns to offer endpoints and implement rate limiting
🔍 How to Verify
Check if Vulnerable:
Test with two authenticated user accounts - attempt to access one user's offer using the other user's session by manipulating offer_id parameter.Check Version:
git log --oneline -1Verify Fix Applied:
Repeat vulnerability test - attempts to access other users' offers should return authorization errors or empty results.📡 Detection & Monitoring
Log Indicators:
- Multiple failed authorization attempts for offer access
- User accessing offers with IDs outside their normal range
- Rapid sequential access to different offer IDs
Network Indicators:
- Unusual patterns of GET requests to offer endpoints with varying IDs
- Parameter tampering in offer-related requests
SIEM Query:
source="web_logs" AND uri="/offer/*" AND status=200 | stats count by user_id, offer_id | where count>threshold