SB2026042337 - Relative Path Traversal in Argo Workflows

Description

This security bulletin contains information about 1 vulnerability.

1) Relative Path Traversal (CVE-ID: CVE-2025-66626)

CWE-ID: CWE-23 - Relative Path Traversal

CVSSv4: 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

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.

Remediation

Install update from vendor's website.

References

• https://github.com/argoproj/argo-workflows/security/advisories/GHSA-xrqc-7xgx-c9vh
• https://github.com/advisories/GHSA-xrqc-7xgx-c9vh