CVSS 3.1
8.1 highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:NCVE-2026-40868
High (8.1) in kyverno kyverno. EPSS 0.3% chance of exploitation in the next 30 days. Fixed in github.com/kyverno/kyverno 1.17.0.
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.
Severity
- EPSS
- 0.3% chance of exploitation in the next 30 days; higher than 21% of CVEs (scores of 2026-10-31)
- CWE
- CWE-922
- Published
- Modified
- Record from
- the NVD, synced
Affected
- kyverno:kyverno
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-q93q-v844-jrqp | Go | github.com/kyverno/kyverno | <1.17.0 | 1.17.0 |
| GO-2026-5575 | Go | github.com/kyverno/kyverno | <1.17.0 | 1.17.0 |