CVE-2026-66986

HCL AION keeps inactive user sessions open too long

HCL Software · HCL AION

First documented disclosure · Review checkpoint

Summary

Inactive sessions remain usable. The session may expose user information or allow actions under the original user’s identity.

Severity and exploitation evidence

Low · 3.3/10 · 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 application does not terminate idle authenticated sessions within an appropriate interval.

Conditions required

Another person must gain access to an unattended authenticated session.

Potential impact

The session may expose user information or allow actions under the original user’s identity.

Affected versions and configurations

2.7.0.

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

Expire idle sessions and require reauthentication for sensitive activity.

Evidence and limits

HCL bulletin KB0135217 was published 2026-11-06 and identifies 2.8.0 as the fix.

Sources