{"id":"CVE-2026-4342","summary":"ingress-nginx comment-based nginx configuration injection","details":"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.)","aliases":["GHSA-f53h-mxv9-cp98","GO-2026-4796"],"modified":"2026-07-08T08:05:13.400062699Z","published":"2026-03-19T21:50:17.878Z","related":["SUSE-SU-2026:1135-1"],"database_specific":{"cwe_ids":["CWE-20"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/4xxx/CVE-2026-4342.json","cna_assigner":"kubernetes"},"references":[{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2026/03/19/9"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/4xxx/CVE-2026-4342.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-4342"},{"type":"REPORT","url":"https://github.com/kubernetes/kubernetes/issues/137893"},{"type":"PACKAGE","url":"https://github.com/kubernetes/ingress-nginx"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/kubernetes/ingress-nginx","events":[{"introduced":"0"},{"fixed":"279297c6f5b86f8867a01951616ccb9513b38bc2"},{"introduced":"ad643baabbbf55d59c60e75330a193545aa8b788"},{"fixed":"0a6fadc01bd4706bc77ceaf91487345a8d03d9c0"},{"introduced":"e3b7b0ec0f0ba7f1609e9f374a6bf68ae7bd27bb"}],"database_specific":{"source":["CPE_RANGE","CPE_STRING"],"cpe":["cpe:2.3:a:kubernetes:nginx_ingress_controller:*:*:*:*:*:*:*:*","cpe:2.3:a:kubernetes:nginx_ingress_controller:1.15.0:*:*:*:*:*:*:*"],"extracted_events":[{"introduced":"0"},{"fixed":"1.13.9"},{"introduced":"1.14.0"},{"fixed":"1.14.5"},{"introduced":"1.15.0"},{"last_affected":"1.15.0"}]}},{"type":"GIT","repo":"https://github.com/kubernetes/kubernetes","events":[{"introduced":"0"},{"fixed":"3e4f6a92de5f259ef313ad876bb008897f6a98f0"},{"introduced":"641856db18352033a0d96dbc99153fa3b27298e5"},{"fixed":"0e9fcb426b100a2aea5ed5c25b3d8cfbb01a8acf"},{"introduced":"e8462b5b5dc2584fdcd18e6bcfe9f1e4d970a529"}],"database_specific":{"cpe":["cpe:2.3:a:kubernetes:nginx_ingress_controller:*:*:*:*:*:*:*:*","cpe:2.3:a:kubernetes:nginx_ingress_controller:1.15.0:*:*:*:*:*:*:*"],"extracted_events":[{"introduced":"0"},{"fixed":"1.13.9"},{"introduced":"1.14.0"},{"fixed":"1.14.5"},{"introduced":"1.15.0"},{"last_affected":"1.15.0"}],"source":["CPE_RANGE","CPE_STRING"]}}],"versions":["1.15.0","helm-chart-4.14.4","controller-v1.14.4","helm-chart-4.13.8","controller-v1.13.8","helm-chart-4.13.7","controller-v1.13.7","helm-chart-4.14.3","controller-v1.14.3","helm-chart-4.13.6","controller-v1.13.6","helm-chart-4.14.2","controller-v1.14.2","helm-chart-4.13.5","controller-v1.13.5","helm-chart-4.14.1","controller-v1.14.1","helm-chart-4.13.4","controller-v1.13.4","helm-chart-4.14.0","controller-v1.14.0","helm-chart-4.13.3","controller-v1.13.3","helm-chart-4.13.2","controller-v1.13.2","helm-chart-4.13.1","controller-v1.13.1","helm-chart-4.13.0","controller-v1.13.0","helm-chart-4.11.0","controller-v1.11.0","controller-v1.10.1","helm-chart-4.10.0","controller-v1.10.0","helm-chart-4.9.1","helm-chart-4.9.0","controller-v1.9.5","helm-chart-4.8.3","controller-v1.9.4","helm-chart-4.8.2","controller-v1.9.3","helm-chart-4.8.1","controller-v1.9.1","helm-chart-4.8.0","controller-v1.9.0-beta.0","helm-chart-4.8.0-beta.0","helm-chart-4.7.2","helm-chart-4.7.1","helm-chart-4.7.0","controller-v1.8.0","helm-chart-4.6.1","controller-v1.7.1","helm-chart-4.6.0","controller-v1.7.0","helm-chart-4.5.2","controller-v1.6.4","helm-chart-4.5.0","helm-chart-4.4.2","helm-chart-4.4.0","controller-v1.5.1","helm-chart-4.3.0","controller-v1.4.0","helm-chart-4.2.5","controller-v1.3.1","helm-chart-4.2.4","helm-chart-4.2.3","helm-chart-4.2.2","helm-chart-4.2.1","helm-chart-4.2.0","controller-v1.3.0","helm-chart-4.1.4","helm-chart-4.1.3","controller-v1.2.1","helm-chart-4.1.2","helm-chart-4.1.1","helm-chart-4.1.0","controller-v1.2.0","helm-chart-4.1.0-beta.1","controller-v1.2.0-beta.1","controller-v1.2.0-beta.0","helm-chart-4.1.0-beta.0","helm-chart-4.0.19","controller-v1.1.3","helm-chart-4.0.18","controller-v1.1.2","helm-chart-4.0.17","helm-chart-4.0.16","helm-chart-4.0.15","controller-v1.1.1","helm-chart-4.0.13","helm-chart-4.0.12","helm-chart-4.0.11","helm-chart-4.0.10","controller-v1.1.0","helm-chart-4.0.9","helm-chart-4.0.8","helm-chart-4.0.7","controller-v1.0.5","helm-chart-4.0.6","controller-v1.0.4","helm-chart-4.0.5","helm-chart-4.0.4","controller-v1.0.3","helm-chart-4.0.3","controller-v1.0.2","helm-chart-4.0.2","controller-v1.0.1","helm-chart-4.0.1","controller-v1.0.0","helm-chart-3.36.0","controller-v0.49.0","helm-chart-3.35.0","controller-v0.48.1","helm-chart-3.34.0","controller-v0.47.0","helm-chart-3.33.0","helm-chart-3.32.0","helm-chart-3.31.0","helm-chart-3.30.0","controller-v0.46.0","helm-chart-3.29.0","helm-chart-3.28.0","controller-v0.45.0","helm-chart-3.27.0","helm-chart-3.26.0","helm-chart-3.24.0","helm-chart-3.25.0","controller-v0.44.0","helm-chart-3.23.0","helm-chart-3.22.0","helm-chart-3.21.0","helm-chart-3.20.1","helm-chart-3.20.0","controller-v0.42.0","controller-v0.43.0","helm-chart-3.19.0","helm-chart-3.18.0","helm-chart-3.17.0","helm-chart-3.16.1","helm-chart-3.16.0","ingress-ngin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