Relative Path Traversal in Argo Workflows - CVE-2025-66626
Published: April 23, 2026
Vulnerability identifier: #VU126896
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2025-66626
CWE-ID: CWE-23
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 user to execute arbitrary code.
The vulnerability exists due to improper neutralization of symbolic links in archive extraction in the workflow executor untar code when processing a crafted archive. A remote user can supply a crafted archive containing symbolic links to overwrite files and execute arbitrary code.
Exploitation can overwrite /var/run/argo/argoexec so that attacker-controlled code runs when the pod starts.
How to mitigate CVE-2025-66626
Install security update from vendor's website.