CVE-2026-7366 IBM CVE debrief

Who should care

Defenders responsible for IBM DataPower Gateway instances, network administrators, and security teams should be aware of this vulnerability and take necessary actions to prevent potential IP spoofing and disclosure of client IP addresses.

Why it matters

The vulnerability in IBM DataPower Gateway allows for IP spoofing and disclosure of client IP addresses, potentially leading to unauthorized access and data breaches. Defenders should prioritize verifying and updating IBM DataPower Gateway instances to prevent these consequences.

• IP spoofing and disclosure of client IP addresses
• Potential for unauthorized access and data breaches
• Need for verification and updates to IBM DataPower Gateway instances

Technical summary

The vulnerability is caused by a race condition in IBM DataPower Gateway that results in improper isolation of request state when handling the built-in X-Client-IP header. This allows for IP spoofing and disclosure of other clients' IP addresses under concurrent request processing. The vulnerability affects IBM DataPower Gateway 11.0.0.0 through 11.0.0.1, 10.5.0.0 through 10.5.0.21, and 10.6.0.0 through 10.6.0.9. Defenders should prioritize verifying and updating IBM DataPower Gateway instances to prevent potential IP spoofing and disclosure of client IP addresses.

Defensive priority

Defenders should prioritize verifying and updating IBM DataPower Gateway instances to prevent potential IP spoofing and disclosure of client IP addresses.

Recommended defensive actions

• Verify and update IBM DataPower Gateway instances to the latest version
• Review and update network configurations to prevent potential IP spoofing
• Monitor for suspicious activity and implement additional security measures as needed
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up
• Review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance

Evidence notes

The CVE record and NVD vulnerability detail page provide information on the vulnerability, including its description, CVSS score, and affected versions. The vulnerability is caused by a race condition in IBM DataPower Gateway that results in improper isolation of request state when handling the built-in X-Client-IP header. The CVE record was published on 2026-08-12T22:17:17.780Z and has not been modified since then. The NVD entry is currently Analyzed. Defenders should verify and update IBM DataPower Gateway instances to prevent these

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.