CVE-2026-35107

HCL AION can redirect users to an untrusted site at logout

HCL Software · HCL AION

First documented disclosure · Review checkpoint

Summary

Unvalidated redirect after logout. The user may be sent to an untrusted site after ending the legitimate session.

Severity and exploitation evidence

Medium · 4.7/10 · CVSS 3.1. Severity source.

Exploitation not established: The reviewed public sources describe the vulnerability and its conditions. Malicious exploitation has not been established in the reviewed sources.

Exploitation evidence source

Technical severity is not a measure of observed attacks or of risk to your deployment. Attempts, demonstrations, and successful compromise retain the qualifications in the source.

How the weakness works

The GenAI user menu follows the configured login destination after logout without validating it.

Conditions required

A user must log out through the affected menu with a destination an attacker can influence.

Potential impact

The user may be sent to an untrusted site after ending the legitimate session.

Affected versions and configurations

2.6.0.

Fix and mitigation status

2.8.0.

Practical next steps

Upgrade HCL AION to 2.8.0 and verify the affected control in the deployed interface.

Operating lesson

Validate destinations after logout as carefully as initial sign-in.

Evidence and limits

HCL bulletin KB0135118 was published 2026-11-04 and identifies 2.8.0 as the fix. HCL’s CVE record gives 2026-11-03 as its public date.

Sources