What is CVE-2026-42297?

CVE-2026-42297 is a high-severity vulnerability in Argoproj Argo-workflows, classified under Missing Authorization. CVSS score: 8.3/10. Published 2026-05-09.

How severe is CVE-2026-42297?

High severity. CVSS v3 base score is 8.3 out of 10.

Auth bypass in Argoproj Argo-workflows

CVE-2026-42297

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, the Sync Service's ConfigMap-backed provider (server/sync/sync_cm.go) performs zer…

Vulnerability class: Broken Access Control

EPSS: 0.000 (2.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H.

Affected products

Argoproj Argo-workflows — versions >= 4.0.0, < 4.0.5
Argoproj Argo_workflows

Weakness classification (CWE)

CWE-862 — Missing Authorization

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-2026-42297?: CVE-2026-42297 is a high-severity vulnerability in Argoproj Argo-workflows, classified under Missing Authorization. CVSS score: 8.3/10. Published 2026-05-09.
How severe is CVE-2026-42297?: High severity. CVSS v3 base score is 8.3 out of 10.