CVSS 3.1
8.8 highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HCVE-2026-4342
A security issue was discovered in ingress-nginx where a combination of Ingress annotations can be used to inject configuration into nginx. This can lead to arbitrary code execution in the context of the ingress-nginx controller, and disclosure of Secrets accessible to the controller. (Note that in the default installation, the controller can access all Secrets cluster-wide.)
Severity
- EPSS
- 1.4% chance of exploitation in the next 30 days; higher than 73% of CVEs (scores of 2026-10-31)
- CWE
- CWE-20
- Published
- Modified
- Record from
- the NVD, synced
Affected
- kubernetes:nginx_ingress_controller
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-f53h-mxv9-cp98 | Go | k8s.io/ingress-nginx | <0.0.0-20260319175635-5183b7d86137 | 0.0.0-20260319175635-5183b7d86137 |
| GO-2026-4796 | Go | k8s.io/ingress-nginx | <0.0.0-20260319175635-5183b7d86137 | 0.0.0-20260319175635-5183b7d86137 |