Quick answers
- Is CVE-2026-18196 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-18196 being exploited in the wild.
- How severe is CVE-2026-18196?
- Medium severity, with a CVSS score of 5.4, published 8 November 2026.
- Which products and versions are affected?
- IBM App Connect Enterprise 13.0.1.0 through 13.0.8.2, 12.0.1.0 through 12.0.12.30.
- Is there a fix for CVE-2026-18196?
- Yes: fixed in App Connect Enterprise 13.0.9.0, 12.0.12.31. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-18196 attacked?
- It is attacked over the network, in a web application.
- Am I affected by CVE-2026-18196?
- Check whether you run IBM App Connect Enterprise 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: App Connect Enterprise 13.0.9.0, 12.0.12.31
Technical details
This is a cross-site scripting (CWE-79) vulnerability caused by improper output neutralization in the web user interface and REST API. The flaw allows remote unauthenticated attackers to inject arbitrary HTML through user interaction (UI:R), resulting in partial confidentiality and integrity impact. A fix is available in version 13.0.9.0 for the 13.0.x branch and 12.0.12.31 for the 12.0.x branch.
Affected products
- IBM App Connect Enterprise 13.0.1.0 through 13.0.8.2, 12.0.1.0 through 12.0.12.30
Timeline
- 2026-10-22: disclosed
- 2026-11-08: advisory