Quick answers
- Is CVE-2026-73700 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-73700 being exploited in the wild.
- How severe is CVE-2026-73700?
- Critical severity, with a CVSS score of 9, published 1 September 2026.
- Which products and versions are affected?
- HPE Networking Fabric Composer.
- Is there a fix for CVE-2026-73700?
- 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-2026-73700 attacked?
- It is attacked over the network, in a web application.
- Am I affected by CVE-2026-73700?
- Check whether you run Arubanetworks Fabric Composer or Hpe Networking Fabric Composer. 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
This vulnerability is a stored cross-site scripting (XSS) flaw in the web-based management interface of HPE Networking Fabric Composer. An authenticated low-privilege operator can inject malicious JavaScript code that persists in the application and executes in the browser context of any administrative user who views the affected content. The attack requires prior authentication as a low-privilege user and no victim interaction beyond normal usage of the administrative interface. Successful exploitation allows arbitrary script execution with the privileges of the administrative user, potentially leading to account takeover, credential theft, or unauthorized system modifications. Patches are likely available from HPE; consult the referenced support documentation for mitigation guidance.
Affected products
- HPE Networking Fabric Composer
Timeline
- 2026-09-01: disclosed