Improper access control in Argo Workflows - CVE-2026-54526
Published: September 22, 2026
Vulnerability identifier: #VU151673
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-54526
CWE-ID: CWE-284
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to execute arbitrary code.
The vulnerability exists due to improper access control in the ArtifactGC.PodSpecPatch field when submitting a workflow under Strict or Secure template referencing. A remote user can submit a crafted artifact garbage-collection pod specification patch to execute arbitrary code.
Exploitation requires a referenced WorkflowTemplate containing at least one template with an output artifact.
Affected software
Argo Workflows
How to mitigate CVE-2026-54526
Install security update from vendor's website.
Argo Workflows - addressed in versions 3.7.15, 4.0.6