Is CVE-2026-17409 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-17409 being exploited in the wild.

How severe is CVE-2026-17409?

Critical severity, with a CVSS score of 9.4, 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-2026-17409?

Yes: fixed in API Connect 10.0.8.13, 12.1.1.3. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-17409 attacked?

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

Am I affected by CVE-2026-17409?

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-2026-17409: IBM API Connect access control bypass via case sensitivity

CVE-2026-17409 · Severity: critical · CVSS 9.4 · Published 2026-11-07

IBM API Connect is a platform for managing and publishing APIs that organizations use to expose business services. A flaw in how the system handles request case sensitivity allows unauthenticated attackers to bypass access controls, perform administrative operations they should not be able to do, and steal sensitive data. This could lead to complete compromise of the API management infrastructure and exposure of backend services.

Technologies: IBM API Connect. Vendors: IBM.

Quick answers

Is CVE-2026-17409 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-17409 being exploited in the wild.
How severe is CVE-2026-17409?: Critical severity, with a CVSS score of 9.4, 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-2026-17409?: Yes: fixed in API Connect 10.0.8.13, 12.1.1.3. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-17409 attacked?: It is attacked over the network, in a hosted service.
Am I affected by CVE-2026-17409?: 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.

How to fix

Fixed in: API Connect 10.0.8.13, 12.1.1.3

Technical details

The vulnerability stems from improper handling of case sensitivity in request path matching, allowing attackers to reach restricted administrative operations by altering the case of request components (CWE-178). An unauthenticated attacker can exploit this over the network to bypass authorization checks and gain unauthorized administrative access. The issue affects versions 10.0.8.0–10.0.8.12 and 12.1.0.0–12.1.1.2; remediation requires upgrading to patched versions.

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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