CVE-2025-62156: argo-workflows Zip Slip path traversal allows arbitrary file write and container configuration overwrite

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2025-10-14 · updated 2026-10-08
Weakness: CWE-22

Description

Argo Workflows is an open source container-native workflow engine for orchestrating parallel jobs on Kubernetes. Versions prior to 3.6.12 and versions 3.7.0 through 3.7.2 contain a Zip Slip path traversal vulnerability in artifact extraction. During artifact extraction the unpack/untar logic (workflow/executor/executor.go) uses filepath.Join(dest, filepath.Clean(header.Name)) without validating that header.Name stays within the intended extraction directory. A malicious archive entry can supply a traversal or absolute path that, after cleaning, overrides the destination directory and causes files to be written outside the /work/tmp extraction path and into system directories such as /etc inside the container. The vulnerability enables arbitrary file creation or overwrite in system configuration locations (for example /etc/passwd, /etc/hosts, /etc/crontab), which can lead to privilege escalation or persistence within the affected container. Update to 3.6.12 or 3.7.3 to remediate the issue.

Affected products

argoproj argo-workflows: before 3.6.12; from 3.7.0 before 3.7.3 — fixed in 3.6.12, 3.7.3

How to fix

Upgrade to a fixed version: argoproj argo-workflows 3.6.12, 3.7.3. Check the vendor advisory for mitigations.

References

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