--- title: "CVE-2026-56589: HCL BigFix Service Management - Stored XSS" description: "HCL BigFix Service Management contains a stored XSS caused by improper sanitization of user input, letting attackers inject malicious scripts that execute when victims view affected pages, enabling session hijacking." url: https://panop.io/threat-heartbeat/CVE-2026-56589/ --- # CVE-2026-56589 HCL BigFix Service Management - Stored XSS HCL BigFix Service Management contains a stored XSS caused by improper sanitization of user input, letting attackers inject malicious scripts that execute when victims view affected pages, enabling session hijacking. CVSS base score 7.2 /10 High CISA KEV Not listed Public exploit None known Authentication Not required EPSS 0.20% chance of exploitation in 30 days [View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-56589) ## Details Type Stored XSS Impact Client Script Exec, Information Disclosure CVSS vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N Published 1 October 2026 Updated 15 October 2026 Weakness [CWE-79](https://cwe.mitre.org/data/definitions/79.html) ## Vendor fix Update to the latest version of HCL BigFix Service Management. Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them. ## References - [https://nvd.nist.gov/vuln/detail/CVE-2026-56589](https://nvd.nist.gov/vuln/detail/CVE-2026-56589) - [https://support.hcl-software.com/csm?id=kb\_article&sysparm\_article=KB0134015](https://support.hcl-software.com/csm?id=kb_article&sysparm_article=KB0134015) [← All CVEs](https://panop.io/threat-heartbeat/) ## What this record can't tell you - Whether you run the affected software, and where - Whether an attacker can actually reach and exploit it - The misconfigurations that never get a CVE number - What it would cost the business, ranked into what to fix first Panop answers these inside your environment, for this CVE and every other finding. [Book a demo](https://panop.io/demo)