CVE•Published 2026-05-09•Modified 2026-05-15•1 article on news•5 live references•NVD data

CVE-2026-42297Argoproj · Argo_workflows

Vulnerability data via NVD (ingested)

CVSS v3.1

8.3

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H

EPSS percentile

—

Weaknesses (CWE)

CWE-862Missing Authorization

Description

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 zero authorization checks on all CRUD operations (create, read, update, delete). Any authenticated user — including those using fake Bearer tokens — can create, read, update, and delete Kubernetes ConfigMaps containing synchronization limits. This issue has been patched in version 4.0.5.

Timeline

Published 2026-05-09

Modified 2026-05-15

External references

NVD MITRE Exploit-DB Sploitus VulnCheck

Search for exposed instances

Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).

Shodan · vuln tag0 hosts

vuln:CVE-2026-42297

Hosts Shodan has explicitly fingerprinted as vulnerable.

Shodan · product

product:"Argoproj Argo Workflows"

All exposed Argoproj Argo Workflows instances — cross-reference with the CVE's affected-version range.

Shodan · banner/body mention

http.html:"Argo Workflows"

HTTP body or banner mentions "Argo Workflows" — catches deploys Shodan didn't identify as a product.

More intel sources (5)

Shodan report

vuln:CVE-2026-42297