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CVE-2026-42457

vCluster Platform: Stored XSS can lead to privilege escalation PUBLISHED

Description (CNA)

vCluster Platform provides a Kubernetes platform for managing virtual clusters, multi-tenancy, and cluster sharing. Prior to 4.4.3, 4.5.5, 4.6.2, 4.7.1, and 4.8.0, there is a Stored XSS attack vulnerability via the name field of a templateRef. This can lead to the execution of arbitrary external scripts within the platform's browser context. In the worst case, a malicious user could potentially create a new Global-Admin user, bypassing other security restrictions. The attacker needs the ability to create namespaces. This vulnerability is fixed in 4.4.3, 4.5.5, 4.6.2, 4.7.1, and 4.8.0.

Affected (CNA)

Vendor / productVersions
loft-sh / loftaffected < 4.4.3; affected >=4.5.0-alpha.0 , < 4.5.5; affected >= 4.6.0-alpha.1, < 4.6.2; affected >= 4.7.0-alpha.0, < 4.7.1

CWE

CWE-79

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.