Quick answers
- Is CVE-2026-18195 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-18195 being exploited in the wild.
- How severe is CVE-2026-18195?
- Medium severity, with a CVSS score of 4.2, 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-2026-18195?
- Yes: fixed in App Connect Enterprise 13.0.9.0 and later; 12.0.12.31 and later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-18195 attacked?
- It is attacked over the network, in a web application.
- Am I affected by CVE-2026-18195?
- 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 and later; 12.0.12.31 and later
Technical details
This is a cross-site scripting (CWE-79) vulnerability caused by improper output encoding of error messages in the web user interface. An unauthenticated remote attacker can inject arbitrary HTML content that gets displayed to users who encounter error messages, enabling content spoofing attacks. The vulnerability requires user interaction to be exploited.
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