CVE-2026-1243: IBM Content Navigator 3.0.15, 3.1.0, and 3.2.0 is vulnerable to cross-site scripting. This vulnerability allows an…

CVE-2026-1243 · Severity: medium · CVSS 5.4 · Published 2026-04-02

IBM Content Navigator 3.0.15, 3.1.0, and 3.2.0 is vulnerable to cross-site scripting. This vulnerability allows an authenticated user to embed arbitrary JavaScript code in the Web UI thus altering the intended functionality potentially leading to credentials disclosure within a trusted session.

Technologies: IBM Aix, Linux Kernel, Microsoft Windows. Vendors: IBM, Linux, Microsoft.

Quick answers

Is CVE-2026-1243 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-1243 being exploited in the wild.
How severe is CVE-2026-1243?
Medium severity, with a CVSS score of 5.4, published 2 April 2026.
Which products and versions are affected?
IBM Aix, IBM Content Navigator, Linux Kernel, Microsoft Windows. The advisory does not name versions.
Is there a fix for CVE-2026-1243?
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.
Am I affected by CVE-2026-1243?
Check whether you run IBM Aix, IBM Content Navigator, Linux Kernel or one of the others listed. 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.

Affected products

  • IBM Aix
  • IBM Content Navigator
  • Linux Kernel
  • Microsoft Windows

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