CVE-2026-7366Network attack vector

IP spoofing and disclosure via X-Client-IP race

Published Aug 12, 2026 · Updated Aug 12, 2026

A race condition in IBM DataPower Gateway's XML Firewall allows remote authenticated users to spoof and disclose client IP addresses. Concurrent requests reuse improperly isolated built-in X-Client-IP state, allowing one request's value to contaminate another. Exploitation requires low-privileged access, high-complexity timing, persistent connections, and client-supplied X-Client-IP values; service availability is unaffected.

CVSS severity4.2
Medium
EPSS probability0.11%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

A race condition in IBM DataPower Gateway's XML Firewall allows remote authenticated users to spoof and disclose client IP addresses. Concurrent requests reuse improperly isolated built-in X-Client-IP state, allowing one request's value to contaminate another. Exploitation requires low-privileged access, high-complexity timing, persistent connections, and client-supplied X-Client-IP values; service availability is unaffected.

The record

CVE
CVE-2026-7366
Published
Aug 12, 2026
Updated
Aug 12, 2026
Vendor
IBM
Product
IBM DataPower Gateway
Classifications
CWE-362
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 12, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 12, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=10.5.0.0 <=10.5.0.21
  2. Affected versionversion=10.6.0.0 <=10.6.0.9
  3. Affected versionversion=11.0.0.0 <=11.0.0.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

IBM · IBM DataPower Gatewayversion=10.5.0.0 <=10.5.0.21; version=10.6.0.0 <=10.6.0.9; version=11.0.0.0 <=11.0.0.1

Published CVSS scores

4.2IBMCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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