CVE-2026-40868
Description
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 packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
github.com/kyverno/kyvernoGo | < 1.17.0 | 1.17.0 |
Affected products
1Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
3- github.com/kyverno/kyverno/security/advisories/GHSA-q93q-v844-jrqpnvdExploitMitigationVendor AdvisoryWEB
- github.com/advisories/GHSA-q93q-v844-jrqpghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-40868ghsaADVISORY
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