High severity · published Mar 11, 2026
CVE-2026-28229
Argo Workflows has unauthorized access to Argo Workflows Template
7.5
CVSS
0.7%
EPSS
No
On KEV
Description
Argo Workflows is an open source container-native workflow engine for orchestrating parallel jobs on Kubernetes. Prior to 4.0.2 and 3.7.11, Workflow templates endpoints allow any client to retrieve WorkflowTemplates (and ClusterWorkflowTemplates). Any request with a Authorization: Bearer nothing token can leak sensitive template content, including embedded Secret manifests. This vulnerability is fixed in 4.0.2 and 3.7.11.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.7% · higher than 51% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AR
argo-workflows · argoproj
>= 4.0.0, < 4.0.2; < 3.7.11 · source: vendor
AW
Argo Workflows · Argoproj
3.7.0 before 3.7.11; 4.0.0 before 4.0.2 · source: NVD
RH
Red Hat OpenShift AI 2.25 · Red Hat
All versions, or not specified · source: CISA
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-28229
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-28229
Exploit
https://github.com/argoproj/argo-workflows/security/advisories/GHSA-56px-hm34-xqj5
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:10184
access.redhat.com
https://access.redhat.com/security/cve/CVE-2026-28229
bugzilla.redhat.com
https://bugzilla.redhat.com/show_bug.cgi?id=2446549
security.access.redhat.com
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-28229.json
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