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CVE-2026-40868

kyverno apicall servicecall implicit bearer token injection leaks kyverno serviceaccount token PUBLISHED

Description (CNA)

Kyverno is a policy engine designed for cloud native platform engineering teams. Prior to 1.16.4, kyverno’s apiCall servicecall helper implicitly injects Authorization: Bearer ... using the kyverno controller serviceaccount token when a policy does not explicitly set an Authorization header. Because context.apiCall.service.url is policy-controlled, this can send the kyverno serviceaccount token to an attacker-controlled endpoint (confused deputy). Namespaced policies are blocked from servicecall usage by the namespaced urlPath gate in pkg/engine/apicall/apiCall.go, so this report is scoped to ClusterPolicy and global context usage. This vulnerability is fixed in 1.16.4.

Affected (CNA)

Vendor / productVersions
kyverno / kyvernoaffected < 1.16.4

CWE

CWE-922

References

ADP enrichment

CISA-ADP

No English description supplied.