CVE-2026-21834 Details
Description
HCL AION is affected by a vulnerability where the Content-Security-Policy (CSP) security response header was missing from application responses. Without this header, the browser does not restrict the sources of scripts and other content, increasing exposure to cross-site scripting and content-injection attacks, potentially resulting in unintended behavior or security impact under certain conditions.
A vulnerability exists in HCL AION version 2.7.0 due to the absence of the Content-Security-Policy (CSP) header in application responses. This omission allows browsers to unrestrictedly source scripts and other content, heightening the risk of cross-site scripting and content-injection attacks. Such vulnerabilities could lead to unintended behaviors or security issues under certain conditions.
Users can upgrade to HCL AION version 2.8.0, which addresses this vulnerability. For assistance with the upgrade process, contact the HCL AION support team.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Nov 6, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://support.hcl-software.com/csm?id=kb_article&sysparm_article=KB0135217 | [email protected] | AdvisoryBundleRemedyVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-1021 | Improper Restriction of Rendered UI Layers or Frames | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| HCL AION | 2.7.0 (semver) |
CPE
Remediation
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Change History
1 change record found show changes
| Date | Action | Recorded By |
|---|---|---|
| Nov 6, 2026 | New CVE Received | [email protected] |