# CVE-2026-21821: HCL BigFix SCM Reporting use of end-of-life jQuery 1.x library

Source: https://junglewise.ai/threats/cve-2026-21821-hcl-bigfix-scm-reporting-use-of-end-of-life-jquery-1-x-library  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-05-13. Updated: 2026-05-14  
License: CC BY 4.0 with a link back

CVE-2026-21821 · Severity: high · CVSS 8.3 · Published 2026-05-13

HCL BigFix SCM Reporting, a tool used for security configuration management and compliance reporting, uses an obsolete version of the jQuery software library. Because this library is no longer supported, it contains known security flaws that could allow attackers to perform malicious actions on a user's computer when they visit the reporting site. This could lead to unauthorized access to sensitive data or the compromise of user sessions.

Vendors: [HCL](https://junglewise.ai/threats/vendors/hcl).

## Quick answers

**Is CVE-2026-21821 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-21821 being exploited in the wild.

**How severe is CVE-2026-21821?** High severity, with a CVSS score of 8.3, published 13 May 2026.

**Which products and versions are affected?** HCL BigFix SCM Reporting site.

**Is there a fix for CVE-2026-21821?** 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-2026-21821 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-21821?** Check whether you run HCL BigFix SCM Reporting site. 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

The HCL BigFix SCM Reporting site is vulnerable due to the use of an unmaintained third-party component (CWE-1104), specifically jQuery 1.x. This version of jQuery has reached end-of-life and contains several publicly known vulnerabilities that will not be patched. An attacker can leverage these flaws via a network-based attack, typically requiring some level of user interaction (UI:R), to execute arbitrary JavaScript in the context of the user's browser session. This can result in a full compromise of confidentiality, integrity, and availability (C:H/I:H/A:H) for the affected web session. Users are advised to refer to HCL security bulletin KB0130744 for remediation steps.

## Affected products

- HCL BigFix SCM Reporting site

## Timeline

- 2026-05-13: advisory: Initial disclosure by HCL Software
- 2026-05-13: disclosed

## References

- [https://support.hcl-software.com/csm?id=kb_article&sysparm_article=KB0130744](https://support.hcl-software.com/csm?id=kb_article&sysparm_article=KB0130744)