NULL pointer dereference in Argoproj Argo-workflows
CVE-2026-42183
Argo Workflows is an open source container-native workflow engine for orchestrating parallel jobs on Kubernetes. From version 4.0.0 to before version 4.0.5, a nil pointer dereference in server/auth/gatekeeper.go rbacAuthorization() causes…
EPSS: 0.001 (16.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Argoproj Argo-workflows — versions >= 4.0.0, < 4.0.5
- Argoproj Argo_workflows
Weakness classification (CWE)
References
- security-advisories@github.com (Patch, x_refsource_MISC)
- security-advisories@github.com (x_refsource_MISC, Release Notes)
- security-advisories@github.com (x_refsource_CONFIRM, Exploit, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-42183?
- CVE-2026-42183 is a medium-severity vulnerability in Argoproj Argo-workflows, classified under NULL Pointer Dereference. CVSS score: 6.5/10. Published 2026-05-09.
- How severe is CVE-2026-42183?
- Medium severity. CVSS v3 base score is 6.5 out of 10.