IBM App Connect Enterprise/Integration Bus for zOS up to 13.0.8.1/12.0.12.28 xml external entity reference

Summaryinfo

A vulnerability, which was classified as critical, has been found in IBM App Connect Enterprise and Integration Bus for zOS up to 13.0.8.1/12.0.12.28. This issue affects some unknown processing. The manipulation leads to xml external entity reference. This vulnerability is traded as CVE-2026-17443. It is possible to initiate the attack remotely. There is no exploit available.

Detailsinfo

A vulnerability was found in IBM App Connect Enterprise and Integration Bus for zOS up to 13.0.8.1/12.0.12.28 and classified as critical. This issue affects an unknown functionality. The manipulation with an unknown input leads to a xml external entity reference vulnerability. Using CWE to declare the problem leads to CWE-611. The product processes an XML document that can contain XML entities with URIs that resolve to documents outside of the intended sphere of control, causing the product to embed incorrect documents into its output. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

IBM App Connect Enterprise 13.0.1.0 through 13.0.8.1, and 12.0.1.0 through 12.0.12.28 and IBM Integration Bus for z/OS 10.1.0.0 through 10.1.0.7 could allow a remote authenticated attacker to obtain sensitive information due to an XML external entity (XXE) injection flaw.

The advisory is shared at ibm.com. The identification of this vulnerability is CVE-2026-17443 since 07/25/2026. The exploitation is known to be easy. The attack may be initiated remotely. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 09/04/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Vendor

• IBM

Name

• App Connect Enterprise
• Integration Bus for zOS

Version

• 12.0.12.0
• 12.0.12.1
• 12.0.12.2
• 12.0.12.3
• 12.0.12.4
• 12.0.12.5
• 12.0.12.6
• 12.0.12.7
• 12.0.12.8
• 12.0.12.9
• 12.0.12.10
• 12.0.12.11
• 12.0.12.12
• 12.0.12.13
• 12.0.12.14
• 12.0.12.15
• 12.0.12.16
• 12.0.12.17
• 12.0.12.18
• 12.0.12.19
• 12.0.12.20
• 12.0.12.21
• 12.0.12.22
• 12.0.12.23
• 12.0.12.24
• 12.0.12.25
• 12.0.12.26
• 12.0.12.27
• 12.0.12.28
• 13.0.8.0
• 13.0.8.1

License

• commercial

Website

• Vendor: https://www.ibm.com/

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