Track vulnerabilities like this one. Sign up free to get alerted when software you use is affected.
3.7

HCL AION lacks security header, allowing script injection

CVE-2026-21833 · published 17 days ago
Summary

HCL AION does not send a Content‑Security‑Policy header, which browsers use to block malicious scripts. Without this protection, web pages could be more vulnerable to cross‑site scripting attacks that might steal data or change page behavior. Add a proper CSP header to the web server configuration to restore this layer of defense.

What to do

The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.

Affected software
VendorProductAffected versions
hcl software aion Version 2.5.0
Original advisory text
HCL AION is susceptible to a Missing "Content-Security-Policy" header Vulnerability (CVE-2026-21833)
HCL AION is affected by a vulnerability in which the Content-Security-Policy (CSP) HTTP response header is not configured. CSP helps prevent attacks such as Cross-Site Scripting (XSS) by restricting the sources from which scripts, styles, and other resources can be loaded. The absence of this header may reduce the effectiveness of browser-based security controls, potentially resulting in unintended behavior or negative security impacts under certain conditions.
References
Fix within
Internet-facing 60 days
Internal At next upgrade
  • Not known to be exploited
  • Needs hands-on effort to exploit
  • Gives an attacker partial control
Severity
3.7 Low
Exploitation
<1% chance of attack within 30 days
Type
CWE-1032OWASP Top Ten 2017 Category A6 - Security Misconfiguration
Timeline
Published1 Oct 2026
Updated14 Oct 2026
First seen1 Oct 2026
Sources
CVE-2026-21833 · NVD
CVE-2026-21833 · MITRE
Track software like this
Free during beta