Critical severity · published Jan 29, 2026
CVE-2026-22806
vCluster Platform's Access Keys Allows Access Beyond Scope
9.1
CVSS
0.5%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
High
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 41% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
LO
loft · loft-sh
< 4.3.10; >= 4.4.0, < 4.4.2; >= 4.5.3, < 4.5.3 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-22806
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-22806
github.com
https://github.com/loft-sh/loft/security/advisories/GHSA-c539-w4ch-7wxq
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