Is CVE-2026-17359 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-17359 being exploited in the wild.

How severe is CVE-2026-17359?

Critical severity, with a CVSS score of 9.9, published 7 November 2026.

Which products and versions are affected?

IBM API Connect 10.0.8.0 through 10.0.8.12, 12.1.0.0 through 12.1.1.2.

Is there a fix for CVE-2026-17359?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-17359 attacked?

It is attacked over the network, in a hosted service.

Am I affected by CVE-2026-17359?

Check whether you run IBM API Connect at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-17359: IBM API Connect arbitrary code execution via improper code generation

CVE-2026-17359 · Severity: critical · CVSS 9.9 · Published 2026-11-07

IBM API Connect is a platform that manages and secures APIs for enterprises. A vulnerability allows an authenticated remote attacker to execute arbitrary code by supplying malicious input that influences code generation within the platform. This could lead to complete compromise of the API management infrastructure and all connected services.

Technologies: IBM API Connect. Vendors: IBM.

Quick answers

Is CVE-2026-17359 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-17359 being exploited in the wild.
How severe is CVE-2026-17359?: Critical severity, with a CVSS score of 9.9, published 7 November 2026.
Which products and versions are affected?: IBM API Connect 10.0.8.0 through 10.0.8.12, 12.1.0.0 through 12.1.1.2.
Is there a fix for CVE-2026-17359?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-17359 attacked?: It is attacked over the network, in a hosted service.
Am I affected by CVE-2026-17359?: Check whether you run IBM API Connect at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The vulnerability stems from improper control of code generation in IBM API Connect versions 10.0.8.0–10.0.8.12 and 12.1.0.0–12.1.1.2. An authenticated attacker can supply values that influence dynamically generated code, leading to arbitrary code execution. Attack requires valid authentication credentials and network access to the API Connect instance.

Affected products

IBM API Connect 10.0.8.0 through 10.0.8.12, 12.1.0.0 through 12.1.1.2

Timeline

2026-11-07: disclosed

References

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