---
id: CVE-2025-66626
title: >-
  Argo Workflows is an open source container-native workflow engine for
  orchestrating parallel jobs on Kubernetes
summary: >-
  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 archive…
severity: high
cvss: 8.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H'
cwe:
  - CWE-23
  - CWE-78
  - CWE-59
vendor: argoproj
product: argo_workflows
affected:
  - argo_workflows < 3.6.14
  - 'argo_workflows >= 3.7.0, < 3.7.5'
patched:
  - argo_workflows 3.7.5
published: '2025-12-09'
updated: '2026-10-14'
sourceUpdated: '2026-10-14T21:10:00.183'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-66626'
references:
  - url: 'https://github.com/advisories/GHSA-p84v-gxvw-73pf'
    label: security-advisories@github.com
  - url: >-
      https://github.com/argoproj/argo-workflows/blob/5291e0b01f94ba864f96f795bb500f2cfc5ad799/workflow/executor/executor.go#L1034-L1037
    label: security-advisories@github.com
  - url: >-
      https://github.com/argoproj/argo-workflows/commit/6b92af23f35aed4d4de8b04adcaf19d68f006de1
    label: security-advisories@github.com
  - url: >-
      https://github.com/argoproj/argo-workflows/security/advisories/GHSA-xrqc-7xgx-c9vh
    label: security-advisories@github.com
  - url: 'https://github.com/advisories/GHSA-p84v-gxvw-73pf'
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
  - url: >-
      https://github.com/argoproj/argo-workflows/security/advisories/GHSA-xrqc-7xgx-c9vh
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
epss: 0.0068
epssPercentile: 0.51288
ingestedAt: '2026-10-14T21:57:04.771Z'
---

## Overview

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.

## Affected

- `argo_workflows < 3.6.14`
- `argo_workflows >= 3.7.0, < 3.7.5`

## Remediation

Upgrade past the affected range:

- `argo_workflows 3.7.5`