IBM DataPower Gateway 11.0.0.0 through 11.0.0.1 and IBM DataPower Gateway 10.5.0.0 through 10.5.0.21 and IBM DataPower Gateway 10.6.0.0 through 10.6.0.9 allows a race condition that results in improper isolation of request state when handling the built‑in X‑Client‑IP header. Under concurrent request processing, X‑Client‑IP values may be contaminated across requests, enabling IP spoofing and disclosure of other clients’ IP addresses.

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Vendors Products
Datapower Gateway 1050 Subscribe
Datapower Gateway 1060 Subscribe
Datapower Gateway 1100 Subscribe
Advisories

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Fixes

Solution

IBM strongly advises upgrading as soon as possible. APAR: DT469107 Affected VersionsFixed in ReleaseIBM DataPower Gateway 11.0.0 11.0.0.0 - 11.0.0.111.0.0.2IBM DataPower Gateway 10.5.0 10.5.0.0 - 10.5.0.2110.5.0.22IBM DataPower Gateway 10.6.0 10.6.0.0 - 10.6.0.910.6.0.10


Workaround

Disable persistent connections to an XML Firewall service or don't set the X-Client-IP header on the client request.

History

Wed, 12 Aug 2026 21:30:00 +0000

Type Values Removed Values Added
Description IBM DataPower Gateway 11.0.0.0 through 11.0.0.1 and IBM DataPower Gateway 10.5.0.0 through 10.5.0.21 and IBM DataPower Gateway 10.6.0.0 through 10.6.0.9 allows a race condition that results in improper isolation of request state when handling the built‑in X‑Client‑IP header. Under concurrent request processing, X‑Client‑IP values may be contaminated across requests, enabling IP spoofing and disclosure of other clients’ IP addresses.
Title IBM DataPower Gateway affected by HTTP request header leakage in XML-Firewall
First Time appeared Ibm
Ibm datapower Gateway 1050
Ibm datapower Gateway 1060
Ibm datapower Gateway 1100
Weaknesses CWE-362
CPEs cpe:2.3:a:ibm:datapower_gateway_1050:10.5.0.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:datapower_gateway_1050:10.5.0.21:*:*:*:*:*:*:*
cpe:2.3:a:ibm:datapower_gateway_1060:10.6.0.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:datapower_gateway_1060:10.6.0.9:*:*:*:*:*:*:*
cpe:2.3:a:ibm:datapower_gateway_1100:11.0.0.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:datapower_gateway_1100:11.0.0.1:*:*:*:*:*:*:*
Vendors & Products Ibm
Ibm datapower Gateway 1050
Ibm datapower Gateway 1060
Ibm datapower Gateway 1100
References
Metrics cvssV3_1

{'score': 4.2, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: ibm

Published:

Updated: 2026-08-12T21:19:41.018Z

Reserved: 2026-04-28T20:55:47.917Z

Link: CVE-2026-7366

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-08-12T22:17:17.780

Modified: 2026-08-12T22:17:17.780

Link: CVE-2026-7366

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses