CVE-2026-42183

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Source
https://cve.org/CVERecord?id=CVE-2026-42183
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-42183.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-42183
Aliases
Downstream
Related
Published
2026-05-09T03:44:10.712Z
Modified
2026-07-31T18:30:09.147395063Z
Severity
  • 2.3 (Low) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N CVSS Calculator
Summary
Argo Workflows: SSO RBAC Delegation Nil Pointer Dereference DoS (gatekeeper.go)
Details

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 a panic (denial of service) for SSO users whose claims match a namespace-level RBAC rule but not an SSO-namespace rule, when SSODELEGATERBACTONAMESPACE=true. This issue has been patched in version 4.0.5.

Database specific 
{
    "cwe_ids": [
        "CWE-476"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/42xxx/CVE-2026-42183.json",
    "cna_assigner": "GitHub_M"
}
References

Affected packages

Git / github.com/argoproj/argo-workflows

Affected ranges

Type
GIT
Repo
https://github.com/argoproj/argo-workflows
Events
Introduced
a8bff4a72130bc1a13d95c6f73ff3fafec880287
Fixed
0ab1452144d8f4d57c50b37ce50dad218868e950
Fixed
c4cc17d0c034fa9a9cc01ef1af6c8016c93071d4
Database specific 
{
    "cpe": "cpe:2.3:a:argoproj:argo_workflows:*:*:*:*:*:go:*:*",
    "extracted_events": [
        {
            "introduced": "4.0.0"
        },
        {
            "fixed": "4.0.5"
        }
    ],
    "source": [
        "CPE_RANGE",
        "REFERENCES"
    ]
}

Affected versions

v4.*
v4.0.0
v4.0.1
v4.0.2
v4.0.3
v4.0.4

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-42183.json"