{"cve":"CVE-2026-4342","nvd":{"published":"2026-03-19T22:16:43.143","modified":"2026-06-17T10:56:26.790","status":"Analyzed","description":"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.)","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":8.8},"cwes":["CWE-20"],"references":["https://github.com/kubernetes/kubernetes/issues/137893","http://www.openwall.com/lists/oss-security/2026/03/19/9"],"products":["kubernetes:nginx_ingress_controller"],"source":"nvd","synced_at":"2026-10-19T22:26:19.218427112+00:00"},"epss":{"cve":"CVE-2026-4342","score":0.01448,"percentile":0.7334,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-f53h-mxv9-cp98","url":"https://osv.dev/vulnerability/GHSA-f53h-mxv9-cp98","summary":"ingress-nginx comment-based nginx configuration injection","modified":"2026-05-20T08:11:45.798604108Z","packages":[{"ecosystem":"Go","name":"k8s.io/ingress-nginx","purl":"pkg:golang/k8s.io/ingress-nginx","ranges":["<0.0.0-20260319175635-5183b7d86137"],"fixed":["0.0.0-20260319175635-5183b7d86137"]}]},{"id":"GO-2026-4796","url":"https://osv.dev/vulnerability/GO-2026-4796","summary":"ingress-nginx comment-based nginx configuration injection in k8s.io/ingress-nginx","modified":"2026-05-20T08:11:45.798604108Z","packages":[{"ecosystem":"Go","name":"k8s.io/ingress-nginx","purl":"pkg:golang/k8s.io/ingress-nginx","ranges":["<0.0.0-20260319175635-5183b7d86137"],"fixed":["0.0.0-20260319175635-5183b7d86137"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}