CVE-2026-35113: HCL AION missing Cross-Origin-Opener-Policy header

CVE-2026-35113 · Severity: medium · CVSS 4.8 · Published 2026-11-06

HCL AION is a business application that may be vulnerable to cross-window attacks if the Cross-Origin-Opener-Policy (COOP) header is missing or misconfigured. An attacker could potentially manipulate interactions between windows opened from different origins, leading to unintended behavior or unauthorized actions within the application.

Technologies: HCL AION. Vendors: HCL.

Quick answers

Is CVE-2026-35113 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-35113 being exploited in the wild.
How severe is CVE-2026-35113?
Medium severity, with a CVSS score of 4.8, published 6 November 2026.
Which products and versions are affected?
HCL AION.
Is there a fix for CVE-2026-35113?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-35113 attacked?
It is attacked over the network, in a web application.
Am I affected by CVE-2026-35113?
Check whether you run HCL AION. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The vulnerability stems from a missing or insecure Cross-Origin-Opener-Policy header, which allows cross-origin documents to share a browsing context with the application and enables cross-window attacks. This is a client-side web security issue that requires user interaction or social engineering to exploit. The vulnerability may result in information disclosure or unintended state changes depending on the application's design.

Affected products

  • HCL AION

Timeline

  • 2026-11-06: disclosed

References

This page as Markdown. Free to reuse under CC BY 4.0 with a link back.