CVE-2026-22806 vCluster Platform's Access Keys Allows Access Beyond Scope
Attackers can bypass access key scopes to access resources outside their intended limits, though still restricted by the key owner's permissions.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-22806?
CVE-2026-22806 is a critical authentication bypass vulnerability in loft-sh loft, published on 29 Jan 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
vCluster Platform provides a Kubernetes platform for managing virtual clusters, multi-tenancy, and cluster sharing. Prior to versions 4.6.0, 4.5.4, 4.4.2, and 4.3.10, when an access key is created with a limited scope, the scope can be bypassed to access resources outside of it. However, the user still cannot access resources beyond what is accessible to the owner of the access key. Versions 4.6.0, 4.5.4, 4.4.2, and 4.3.10 fix the vulnerability. Some other mitigations are available. Users can limit exposure by reviewing access keys which are scoped and ensuring any users with access to them have appropriate permissions set. Creating automation users with very limited permissions and using access keys for these automation users can be used as a temporary workaround where upgrading is not immediately possible but scoped access keys are needed.
Weakness: CWE-863
Which versions are affected by CVE-2026-22806?
How do I fix CVE-2026-22806?
No fix has been published for CVE-2026-22806 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2026-22806 being exploited?
There is no known exploitation of CVE-2026-22806 in the wild and no public exploit code.
Sources
Also known as GHSA-c539-w4ch-7wxq.