CVSS 4.0
8.5 highCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:H/SC:N/SI:H/SA:HCVE-2026-42297
High (8.5) in argoproj argo workflows. EPSS 0.5% chance of exploitation in the next 30 days. Fixed in github.com/argoproj/argo-workflows/v4 4.0.5.
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.
Severity
CVSS 3.1
8.3 highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H- EPSS
- 0.5% chance of exploitation in the next 30 days; higher than 43% of CVEs (scores of 2026-10-31)
- CWEs
- CWE-862, CWE-425
- Published
- Modified
- Record from
- the NVD, synced
Affected
- argoproj:argo_workflows
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-xchc-cqwg-g76q | Go | github.com/argoproj/argo-workflows/v4 | >=4.0.0 <4.0.5 | 4.0.5 |
| GO-2026-5751 | Go | github.com/argoproj/argo-workflows | all versions | no fix published |
| GO-2026-5751 | Go | github.com/argoproj/argo-workflows/v2 | all versions | no fix published |
| GO-2026-5751 | Go | github.com/argoproj/argo-workflows/v3 | all versions | no fix published |
| GO-2026-5751 | Go | github.com/argoproj/argo-workflows/v4 | >=4.0.0 <4.0.5 | 4.0.5 |
References
- https://github.com/argoproj/argo-workflows/commit/09fff05e0830c14a5e36cc40597ad84881db1ab6
- https://github.com/argoproj/argo-workflows/releases/tag/v4.0.5
- https://github.com/argoproj/argo-workflows/security/advisories/GHSA-xchc-cqwg-g76q
- https://access.redhat.com/security/cve/CVE-2026-42297
- https://bugzilla.redhat.com/show_bug.cgi?id=2468448