---
id: "CVE-2026-35113"
page: "https://infrastack.ai/live/CVE-2026-35113"
kind: "vulnerability"
aliases: ["CVE-2026-35113"]
title: "HCL AION: missing COOP header lets cross-origin pages share browsing context"
severity: "medium"
cvss: 4.8
epss: null
exploited: false
status: "open"
category: "other"
products: []
ecosystems: []
tags: ["hcl-aion", "other", "web-apps"]
not_affected_if: []
published_at: "2026-11-06T14:17:13+00:00"
first_seen_at: "2026-11-06T14:42:11+00:00"
updated_at: "2026-11-06T14:43:38+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-35113", "first_seen_at": "2026-11-06T14:42:11+00:00"}]
exploit_sources: []
---

# HCL AION: missing COOP header lets cross-origin pages share browsing context

Link for people: https://infrastack.ai/live/CVE-2026-35113 (this .md is for agents)

HCL AION does not send a proper Cross-Origin-Opener-Policy header, so other websites can share a browsing context with it. An attacker who lures a user to a malicious page could possibly carry out cross-window attacks with unintended effects.

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

## Timeline

- 2026-11-06T14:42:11+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-35113

## From the sources

HCL AION is affected by a vulnerability where the Cross-Origin-Opener-Policy (COOP) header was missing or insecure, allowing cross-origin documents to share a browsing context with the application. This may enable cross-window attacks, potentially resulting in unintended behavior or security impact under certain conditions.

---

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