{"id":"CVE-2026-40886","revision":"02e09d136a32489a8f31a989b3785fd1","records":[{"revision":"02e09d136a32489a8f31a989b3785fd1","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-40886","aliases":[],"title":"Argo Workflows: Unchecked annotation parsing in pod informer crashes Argo Workflows controller","description":"Argo Workflows is an open source container-native workflow engine for orchestrating parallel jobs on Kubernetes. From 3.6.5 to 4.0.4, an unchecked array index in the pod informer's podGCFromPod() function causes a controller-wide panic when a workflow pod carries a malformed workflows.argoproj.io/pod-gc-strategy annotation. Because the panic occurs inside an informer goroutine (outside the controller's recover() scope), it crashes the entire controller process. The poisoned pod persists across restarts, causing a crash loop that halts all workflow processing until the pod is manually deleted. This vulnerability is fixed in 4.0.5 and 3.7.14.","state":0,"publishedAt":"2026-04-23T18:12:05.782+00:00","modifiedAt":"2026-07-15T01:00:32.466+00:00","affected":[{"ecosystem":"Vendor product","name":"argo-workflows","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"argoproj\",\n                    \"product\": \"argo-workflows\",\n                    \"versions\": [\n                        {\n                            \"version\": \">= 4.0.0, < 4.0.5\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \">= 3.7.0, < 3.7.14\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \">= 3.6.5, <= 3.6.19\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H","score":7.7,"severity":"HIGH"}],"references":["https://github.com/argoproj/argo-workflows/security/advisories/GHSA-5jv8-h7qh-rf5p"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-40886","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-40886","identifiers":["CVE-2026-40886"]},"retained":false,"historicalAffected":[]}],"coverage":[]}