Quick answers
- Is CVE-2026-17342 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-17342 being exploited in the wild.
- How severe is CVE-2026-17342?
- 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-2026-17342?
- 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-2026-17342 attacked?
- It is attacked over the network.
- Am I affected by CVE-2026-17342?
- 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 during template processing, allowing a remote authenticated attacker to inject and execute arbitrary code. The flaw requires valid authentication credentials but no additional user interaction. An attacker with legitimate access can escalate to full code execution on the API Connect server, compromising all downstream APIs and sensitive data.
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