Quick answers
- Is CVE-2026-56589 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-56589 being exploited in the wild.
- How severe is CVE-2026-56589?
- High severity, with a CVSS score of 7.2, published 1 October 2026.
- Which products and versions are affected?
- HCL Software BigFix Service Management.
- Is there a fix for CVE-2026-56589?
- 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-2026-56589 attacked?
- It is attacked over the network, in a web application.
- Am I affected by CVE-2026-56589?
- Check whether you run HCL Software BigFix Service Management. 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
A stored XSS vulnerability in HCL BigFix Service Management permits attackers to inject malicious JavaScript code that persists in the application and executes in the context of other users' browsers. The vulnerability requires an attacker to have the ability to submit content to the affected application (such as comments, descriptions, or other user-input fields), and the payload executes when victims view the compromised content, allowing credential theft or session hijacking.
Affected products
- HCL Software BigFix Service Management
Timeline
- 2026-10-01: disclosed