---
id: "CVE-2026-21834"
page: "https://infrastack.ai/live/CVE-2026-21834"
kind: "vulnerability"
aliases: ["CVE-2026-21834"]
title: "HCL AION: missing Content-Security-Policy header raises cross-site scripting exposure"
severity: "low"
cvss: 3.1
epss: null
exploited: false
status: "open"
category: "vendor"
products: []
ecosystems: []
tags: ["hcl-aion", "vendor"]
not_affected_if: []
published_at: "2026-11-06T16:17:56+00:00"
first_seen_at: "2026-11-06T16:42:41+00:00"
updated_at: "2026-11-06T16:44:53+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-21834", "first_seen_at": "2026-11-06T16:42:41+00:00"}]
exploit_sources: []
---

# HCL AION: missing Content-Security-Policy header raises cross-site scripting exposure

Link for people: https://infrastack.ai/live/CVE-2026-21834 (this .md is for agents)

HCL AION application responses omit the Content-Security-Policy security header. Without it, the browser does not restrict where scripts and other content may load from, which increases exposure to cross-site scripting and content injection.

_Summary, check and fix written by a model from the sources; labelled as such._

## Timeline

- 2026-11-06T16:42:41+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-21834

## From the sources

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.

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_Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai_