CVE-2026-42297 | THREATINT

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.

PUBLISHED Reserved 2026-04-26 | Published 2026-05-09 | Updated 2026-05-09 | Assigner GitHub_M

HIGH: 8.5CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:H/SC:N/SI:H/SA:H

Problem types

CWE-862: Missing Authorization

Product status

>= 4.0.0, < 4.0.5

affected

References

github.com/...kflows/security/advisories/GHSA-xchc-cqwg-g76q

github.com/...ommit/09fff05e0830c14a5e36cc40597ad84881db1ab6

github.com/argoproj/argo-workflows/releases/tag/v4.0.5

cve.org (CVE-2026-42297)

nvd.nist.gov (CVE-2026-42297)

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