Ce mail provient de l'extérieur, restons vigilants ===================================================================== CERT-Renater Note d'Information No. 2026/VULN319 _____________________________________________________________________ DATE : 20/03/2026 HARDWARE PLATFORM(S): / OPERATING SYSTEM(S): Systems running ingress-nginx versions prior to 1.13.9, 1.14.5, 1.15.1. ===================================================================== https://groups.google.com/g/kubernetes-security-announce/c/hIAkgZb8MJ0 _____________________________________________________________________ [Security Advisory] CVE-2026-4342: ingress-nginx comment-based nginx configuration injection Tabitha Sable 19 mars 2026, 18:45:22 à kubernete...@googlegroups.com,dev,kubernetes-sec...@googlegroups.com, kubernetes-se...@googlegroups.com,distributo...@kubernetes.io Hello Kubernetes Community, 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.) This issue has been rated **HIGH** ([CVSS calculator] (https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H), score: 8.8), and assigned **CVE-2026-4342** ### Am I vulnerable? This issue affects ingress-nginx. If you do not have ingress-nginx installed on your cluster, you are not affected. You can check this by running `kubectl get pods --all-namespaces --selector app.kubernetes.io/name=ingress-nginx`. #### Affected Versions - ingress-nginx: < v1.13.9 - ingress-nginx: < v1.14.5 - ingress-nginx: < v1.15.1 ### How do I mitigate this vulnerability? #### Fixed Versions - ingress-nginx: v1.13.9 - ingress-nginx: v1.14.5 - ingress-nginx: v1.15.1 #### How to upgrade? To upgrade, refer to the documentation: [Upgrading Ingress-nginx] (https://kubernetes.github.io/ingress-nginx/deploy/upgrade/) ### Detection Suspicious data within the `rules.http.paths.path` field of an Ingress resource could indicate an attempt to exploit this vulnerability. If you find evidence that this vulnerability has been exploited, please contact secu...@kubernetes.io See the GitHub issue for more details: https://github.com/kubernetes/kubernetes/issues/137893 #### Acknowledgements This vulnerability was reported by wooseokdotkim. Thank You, Tabitha Sable on behalf of the Kubernetes Security Response Committee ========================================================= + CERT-RENATER | tel : 01-53-94-20-44 + + 23/25 Rue Daviel | fax : 01-53-94-20-41 + + 75013 Paris | email:cert@support.renater.fr + =========================================================