argo-workflows Zip Slip path traversal allows arbitrary file write and container configuration overwrite

Summary

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.

Timeline

1. Oct 14, 2025, 2:52 PM UTCCVE published
2. Oct 14, 2025, 4:04 PM UTCCISA SSVC assessment

   Exploitation: poc · Automatable: no · Technical impact: partial

3. Oct 14, 2025, 4:04 PM UTCRecord last updated

Affected versions

• argoproj argo-workflows

  fixed in 3.6.12; From 3.7.0 · fixed in 3.7.3

• github.com/argoproj/argo-workflows/v3Go

  fixed in 3.6.12

• github.com/argoproj/argo-workflows/v3Go

  From 3.7.0 · fixed in 3.7.3

• github.com/argoproj/argo-workflowsGo

  All versions

• github.com/argoproj/argo-workflows/v2Go

  All versions

• github.com/argoproj/argo-workflows/v3Go

  fixed in 3.6.12; From 3.7.0 · fixed in 3.7.3

References 4