CVE-2026-21833

CVE-2026-21833

Low · published October 1, 2026

CVSS v3.1
3.7
EPSS
0%
Percentile
9.9
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
3.7 · LOW
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00205 · 9.9th percentile
Published
2026-10-01T21:17Z
References (1)
EPSS history
Timeline
  • 03 OCT 03:42Z
    EPSS moved — → 0%
    epss
  • 01 OCT 16:54Z
    HCL AION is susceptible to a Missing "Content-Security-Policy" header Vulnerability (CVE-2026-21833)
    cvelistv5