CVE-2026-23684
📋 TL;DR
A race condition vulnerability in SAP Commerce Cloud allows attackers to manipulate cart entries during product addition, potentially enabling checkout with incorrect product values. This affects data integrity but not confidentiality or availability. Organizations using vulnerable SAP Commerce Cloud deployments are affected.
💻 Affected Systems
- SAP Commerce Cloud
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers could purchase products at incorrect prices, leading to financial loss, inventory discrepancies, and potential regulatory compliance issues.
Likely Case
Opportunistic attackers exploiting timing windows to obtain products at unintended prices, causing revenue loss and order fulfillment problems.
If Mitigated
With proper controls, impact is limited to occasional cart errors that can be detected and corrected through order validation processes.
🎯 Exploit Status
Requires precise timing and cart manipulation; likely requires authenticated access to add products
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check SAP Note 3689543 for specific patch versions
Vendor Advisory: https://me.sap.com/notes/3689543
Restart Required: Yes
Instructions:
1. Review SAP Note 3689543 for specific patch details. 2. Apply the recommended SAP Commerce Cloud patch. 3. Restart the application server. 4. Test cart functionality post-patch.
🔧 Temporary Workarounds
Implement cart locking mechanism
allAdd synchronization or locking around cart modification operations to prevent race conditions
Implementation requires code changes; no simple commands
Add cart validation at checkout
allImplement server-side validation of cart contents and prices before processing checkout
Implementation requires code changes; no simple commands
🧯 If You Can't Patch
- Implement rate limiting on cart operations to reduce race condition opportunities
- Add monitoring for unusual cart modifications or price discrepancies
🔍 How to Verify
Check if Vulnerable:
Check SAP Commerce Cloud version against affected versions listed in SAP Note 3689543Check Version:
Check SAP Commerce Cloud administration console or deployment configuration for version informationVerify Fix Applied:
Test cart functionality with concurrent product additions and verify prices remain consistent📡 Detection & Monitoring
Log Indicators:
- Multiple concurrent cart modifications from same user
- Cart price discrepancies between add and checkout events
- Unusual cart update frequency
Network Indicators:
- High frequency of cart API calls from single sources
- Patterns of rapid product addition/removal
SIEM Query:
source="sap-commerce" AND (event="cart_update" OR event="product_add") | stats count by user_id, session_id | where count > threshold