SecuriTricks - 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.

Product(s) Impacted

Vendor	Product	Versions
Kyverno	Kyverno	<1.16.4

Weaknesses

Common security weaknesses mapped to this vulnerability.

CWE-922

Insecure Storage of Sensitive Information

The product stores sensitive information without properly limiting read or write access by unauthorized actors.

*CPE(s)

Affected systems and software identified for this CVE.

Type	Vendor	Product	Version	Update	Edition	Language	Software Edition	Target Software	Target Hardware	Other Information
a	kyverno	kyverno	<1.16.4	/	/	/	/	/	/	/

References

https://github.com/kyverno/kyverno/security/advisories/GHSA-q93q-v844-jrqp

CVSS Score

8.1 / 10

CVSS Data - 3.1

Attack Vector: NETWORK
Attack Complexity: LOW
Privileges Required: LOW
Scope: UNCHANGED
Confidentiality Impact: HIGH
Integrity Impact: HIGH
Availability Impact: NONE

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

View Vector String

Timeline

Published: April 21, 2026, 7:16 p.m.
Last Modified: April 22, 2026, 9:24 p.m.

Status : Awaiting Analysis

CVE has been recently published to the CVE List and has been received by the NVD.

More info

Source

[email protected]

CVE-2026-40868