Quick answers
- Is CVE-2026-16190 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-16190 being exploited in the wild.
- How severe is CVE-2026-16190?
- Low severity, with a CVSS score of 3.1, published 14 September 2026.
- Which products and versions are affected?
- IBM WebSphere Application Server 8.5, 9.0 (prior to 8.5.5.31 and 9.0.5.29).
- Is there a fix for CVE-2026-16190?
- 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-2026-16190 attacked?
- It is attacked from the adjacent network, in a hosted service.
- Am I affected by CVE-2026-16190?
- Check whether you run IBM WebSphere Application Server 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 is a missing authorization flaw (CWE-862) in IBM WebSphere Application Server versions 8.5 and 9.0. The vulnerability requires adjacent network access (not internet-reachable), has high complexity in exploitation, and does not require authentication or user interaction. A successful exploit permits limited confidentiality impact through unauthorized information disclosure. Patches are available in versions 9.0.5.29 and later, as well as 8.5.5.31 and later.
Affected products
- IBM WebSphere Application Server 8.5, 9.0 (prior to 8.5.5.31 and 9.0.5.29)
Timeline
- 2026-09-14: disclosed