IBM DataPower Gateway affected by HTTP request header leakage in XML-Firewall (CVE-2026-7366) | HOL Guard CVE

Medium · CVSS 4.2CVE-2026-7366

IBM DataPower Gateway affected by HTTP request header leakage in XML-Firewall

Answer in brief

CVE-2026-7366 records a Medium severity (CVSS 4.2) vulnerability in IBM DataPower Gateway affected by HTTP request header leakage in XML-Firewall. The current sources do not mark it as known exploited. The current feed maps IBM/DataPower Gateway 10.5.0 (generic), IBM/DataPower Gateway 10.6.0 (generic), IBM/DataPower Gateway 11.0.0 (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 12, 2026Updated Aug 17, 2026Source checked Sep 28, 2026First seen by HOL Aug 12, 2026Material review Aug 17, 2026

Upstream Advisory

Key facts

Risk: Medium · CVSS 4.2
Exploitation: Not marked as known exploited
Affected software: 4 mapped packages or products
Fix availability: Not reported

Why this deserves its current priority

CVSS is 4.2. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps IBM/DataPower Gateway 10.5.0 (generic), IBM/DataPower Gateway 10.6.0 (generic), IBM/DataPower Gateway 11.0.0 (generic). Check affected ranges and fixed versions before updating.

Affected products and reported versions
Product	Affected versions	Fixed versions
cpe:2.3:a:ibm:datapower_gateway::::::::	Not reported	Not reported

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
IBM/DataPower Gateway 10.5.0generic	10.5.0.0	Not reported
IBM/DataPower Gateway 10.6.0generic	10.6.0.0	Not reported
IBM/DataPower Gateway 11.0.0generic	11.0.0.0	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for IBM/DataPower Gateway 10.5.0, IBM/DataPower Gateway 10.6.0, IBM/DataPower Gateway 11.0.0.
Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

Published upstream
Aug 12, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Aug 17, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 12, 2026

Sources and claim methodology

Source referenceibm.com

Upstream source 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.

Quoted source text, attributed separately from HOL analysis.