8.1

CVSS Score

3.1

-

CVSS Score

Basic Information

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CVE-2025-62156

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

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.

(GitHub Advisory)

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CVE-2025-62156

CVE-2025-62156:

8.1

CVSS Score

3.1

-

CVSS Score

Basic Information

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Technical Details

Package Name	Ecosystem	Vulnerable Versions	First Patched Version
github.com/argoproj/argo-workflows/v3	go	< 3.6.12	3.6.12
github.com/argoproj/argo-workflows/v3	go	>= 3.7.0, < 3.7.3	3.7.3

Technical Details

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Root Cause Analysis

The vulnerability exists in the untar function within workflow/executor/executor.go. The function is responsible for extracting tar archives, but it fails to properly validate the file paths of the contents of the archive. The vulnerability is a path traversal, also known as Zip Slip. An attacker can create a malicious tar archive with file paths that include ../ sequences. When the untar function extracts this archive, it concatenates the destination path with the malicious file path from the archive, allowing the attacker to write files to arbitrary locations on the filesystem, outside of the intended destination directory. The provided patches fix this vulnerability by adding a check to ensure that the resolved path of each extracted file is within the intended destination directory. The evidence from the commits clearly shows the addition of path validation logic within the untar function, confirming that this function was the source of the vulnerability.

Vulnerable functions

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WAF Rule

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Reasoning

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