CVE-2025-66626 HIGH

CVE-2025-66626: argoproj/argo-workflows is vulnerable to RCE via ZipSlip and symbolic links

Vendor Argoproj
Product argo-workflows
Weakness CWE-23
Published December 9, 2025
Last update December 12, 2025

CVSS base score

8.1/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality None
Integrity High

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

What the vulnerability does

01Description

Argo Workflows is an open source container-native workflow engine for orchestrating parallel jobs on Kubernetes. Versions 3.6.13 and below and versions 3.7.0 through 3.7.4, contain unsafe untar code that handles symbolic links in archives. Concretely, the computation of a link's target and the subsequent check are flawed. An attacker can overwrite the file /var/run/argo/argoexec with a script of their choice, which would be executed at the pod's start. The patch deployed against CVE-2025-62156 is ineffective against malicious archives containing symbolic links. This issue is fixed in versions 3.6.14 and 3.7.5.

Key dates

02Disclosure timeline

December 9, 2025 CVE published
December 12, 2025 Record updated