SB2026092278 - Improper access control in Argo Workflows

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Main Vulnerability Database SB2026092278

SB2026092278 - Improper access control in Argo Workflows

Published: September 22, 2026

Security Bulletin ID SB2026092278
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Improper access control (CVE-ID: CVE-2026-54526)

CWE-ID: CWE-284 - Improper Access Control

CVSSv4: 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]


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.


Remediation

Install update from vendor's website.

References