CVE-2026-40868

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.

CVSS v3 8.1 HIGH

8.1^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/kyverno/kyverno/security/advisories/GHSA-q93q-v844-jrqp	Exploit Mitigation Vendor Advisory
https://github.com/kyverno/kyverno/security/advisories/GHSA-q93q-v844-jrqp	Exploit Mitigation Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:kyverno:kyverno:*:*:*:*:*:*:*:*

History

27 Apr 2026, 19:41

Type	Values Removed	Values Added
References	~~() https://github.com/kyverno/kyverno/security/advisories/GHSA-q93q-v844-jrqp -~~	() https://github.com/kyverno/kyverno/security/advisories/GHSA-q93q-v844-jrqp - Exploit, Mitigation, Vendor Advisory
First Time		Kyverno Kyverno kyverno
CPE		cpe:2.3:a:kyverno:kyverno::::::::

22 Apr 2026, 14:17

Type	Values Removed	Values Added
References	~~() https://github.com/kyverno/kyverno/security/advisories/GHSA-q93q-v844-jrqp -~~	() https://github.com/kyverno/kyverno/security/advisories/GHSA-q93q-v844-jrqp -

21 Apr 2026, 19:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-04-21 19:16

Updated : 2026-06-17 10:45

NVD link : CVE-2026-40868

Mitre link : CVE-2026-40868

CVE.ORG link : CVE-2026-40868

JSON object : View

Products Affected

kyverno

kyverno

CWE

CWE-922

Insecure Storage of Sensitive Information

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