{"id":"CVE-2026-40886","revision":"a630253ad8bc4fbda534e3d7a68dbfdf","records":[{"revision":"a630253ad8bc4fbda534e3d7a68dbfdf","observedAt":"2026-10-27T10:10:07.342+00:00","statement":{"source":"nvd","id":"CVE-2026-40886","aliases":[],"title":"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…","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":"2026-04-23T19:17:28.617+00:00","modifiedAt":"2026-10-26T22:10:00.163+00:00","affected":[],"metrics":[{"system":"CVSS 3.1 · security-advisories@github.com · Secondary","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"},{"system":"CVSS 3.1 · 0b0ca135-0b70-47e7-9f44-1890c2a1c46c · Secondary","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","https://access.redhat.com/security/cve/CVE-2026-40886","https://bugzilla.redhat.com/show_bug.cgi?id=2461236","https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-40886.json"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-40886","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Modified","weaknesses":["CWE-129","CWE-1285"],"productCriteria":["cpe:2.3:a:argoproj:argo_workflows:*:*:*:*:*:go:*:*"],"sourceDates":{"published":"2026-04-23T19:17:28.617","lastModified":"2026-10-26T22:10:00.163"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-40886","identifiers":["CVE-2026-40886"]},"retained":false,"historicalAffected":[]}],"coverage":[]}