# CVE-2026-35112: HCL AION missing Cross-Origin-Embedder-Policy header

Source: https://junglewise.ai/threats/cve-2026-35112-hcl-aion-is-affected-by-a-vulnerability-where-the-cross-origin  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-11-06. Updated: 2026-11-06  
License: CC BY 4.0 with a link back

CVE-2026-35112 · Severity: medium · CVSS 4.2 · Published 2026-11-06

HCL AION is an enterprise application platform that manages sensitive business processes and data. The platform fails to enforce the Cross-Origin-Embedder-Policy header, allowing embedded cross-origin resources to bypass security restrictions. This could enable attackers to access or manipulate sensitive data or functionality through cross-origin attacks.

Technologies: [HCL AION](https://junglewise.ai/threats/technologies/aion). Vendors: [HCL](https://junglewise.ai/threats/vendors/hcl).

## Quick answers

**Is CVE-2026-35112 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-35112 being exploited in the wild.

**How severe is CVE-2026-35112?** Medium severity, with a CVSS score of 4.2, published 6 November 2026.

**Which products and versions are affected?** HCL AION.

**Is there a fix for CVE-2026-35112?** 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-2026-35112 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-35112?** 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 improperly configured Cross-Origin-Embedder-Policy (COEP) header in HCL AION, which weakens cross-origin isolation protections. This allows embedded cross-origin resources to execute without explicit permission grants, potentially leading to unintended behavior or security impact. The attack requires network access and specific cross-origin resource embedding conditions.

## Affected products

- HCL AION

## Timeline

- 2026-11-06: disclosed

## References

- [https://support.hcl-software.com/csm?id=kb_article&sysparm_article=KB0135118](https://support.hcl-software.com/csm?id=kb_article&sysparm_article=KB0135118)

## Related threats

- [HCL AION weak account lockout brute-force](https://junglewise.ai/threats/cve-2026-66987-hcl-aion-is-affected-by-a-vulnerability-where-the-account-lockout)
- [HCL AION HTTP Host header injection](https://junglewise.ai/threats/cve-2026-66981-hcl-aion-is-affected-by-a-vulnerability-where-the-application)
- [HCL AION missing Cross-Origin-Opener-Policy header](https://junglewise.ai/threats/cve-2026-35113-hcl-aion-is-affected-by-a-vulnerability-where-the-cross-origin)
- [HCL AION missing cross-origin resource policy header](https://junglewise.ai/threats/cve-2026-35111-hcl-aion-is-affected-by-a-vulnerability-where-the-cross-origin)
- [HCL AION unencrypted communication enforcement](https://junglewise.ai/threats/cve-2026-35110-hcl-aion-is-affected-by-a-vulnerability-where-encrypted-https)