CVE-2026-42296Argo Workflows is an open source container-native workflow engine for orchestrating parallel jobs on Kubernetes.
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Argo Workflows is an open source container-native workflow engine for orchestrating parallel jobs on Kubernetes. Prior to versions 3.7.14 and 4.0.5, a user with create Workflow permission can bypass templateReferencing: Strict to get host network access, switch service accounts, override pod security context, add tolerations to schedule on control-plane nodes, or enable SA token mounting. This defeats the stated purpose of the feature. The practical impact depends on what Kubernetes-level controls are in place. Clusters with PodSecurity admission or OPA/Gatekeeper would independently block some of these (like hostNetwork). Clusters that rely on Argo's Strict mode as the primary enforcement layer are fully exposed. This issue has been patched in versions 3.7.14 and 4.0.5.
- CVSS
- 8.1 HIGH (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
- Weakness (CWE)
- CWE-863
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Modified
- Record last updated
- Jul 24, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
argoproj argo_workflows argoproj:argo_workflows | before 3.7.14; from 4.0.0 before 4.0.5 | NVD |
References
- https://github.com/argoproj/argo-workflows/commit/534f4ff1cbd86908e8ff76d97d553ad5a49a950dpatch
- https://github.com/argoproj/argo-workflows/releases/tag/v3.7.14release-notes
- https://github.com/argoproj/argo-workflows/releases/tag/v4.0.5release-notes
- https://github.com/argoproj/argo-workflows/security/advisories/GHSA-3775-99mw-8rp4exploit, mitigation, vendor-advisory
- https://access.redhat.com/security/cve/CVE-2026-42296
- https://bugzilla.redhat.com/show_bug.cgi?id=2468446
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-42296.json
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.