Improper access control in Argo Workflows - CVE-2026-28229
Published: April 23, 2026
Vulnerability identifier: #VU126904
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-28229
CWE-ID: CWE-284
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Argo
Affected software:
Argo Workflows
Argo Workflows
Detailed vulnerability description
The vulnerability allows a remote attacker to disclose sensitive information.
The vulnerability exists due to improper access control in workflow template and cluster workflow template endpoints when handling requests to retrieve templates. A remote attacker can send a request with a crafted bearer token to disclose sensitive information.
Exposed template content may include embedded Secret manifests, artifact locations, service account usage, environment variables, and resource manifests.
How to mitigate CVE-2026-28229
Install security update from vendor's website.