Quick answers
- Is CVE-2026-4418 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-4418 being exploited in the wild.
- How severe is CVE-2026-4418?
- Medium severity, with a CVSS score of 5.4, published 19 October 2026.
- Which products and versions are affected?
- IBM Cloud Pak System 2.3.6.0, 2.3.6.1.
- Is there a fix for CVE-2026-4418?
- Yes: fixed in 2.3.6.2. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-4418 attacked?
- It is attacked over the network, in a web application.
- Am I affected by CVE-2026-4418?
- Check whether you run IBM Cloud Pak System 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: 2.3.6.2
Technical details
The vulnerability is an HTML injection flaw (CWE-80) in IBM Cloud Pak System versions 2.3.6.0 and 2.3.6.1 that allows a remotely authenticated attacker to inject malicious HTML/script code. The attack requires user interaction (a victim must view the page containing the injected content) and is limited in scope by the authentication requirement. A successful exploit executes arbitrary code in the victim's browser under the hosting site's security context.
Affected products
- IBM Cloud Pak System 2.3.6.0, 2.3.6.1
Timeline
- 2026-10-19: disclosed
- 2026-10-01: patched: Fix available in version 2.3.6.2