CVE-2025-66626

Name: CVE-2025-66626
Creator: NVD / NIST
Published: 2025-12-09T21:16:00.15+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 0.57%

Last modified Jun 17, 2026

CVE-2025-66626 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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. EPSS estimates a 0.57% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

EPSS Probability

0.57%

42.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Argoproj	Argo Workflows	< 3.6.14
Argoproj	Argo Workflows	>= 3.7.0, < 3.7.5

References

https://github.com/advisories/GHSA-p84v-gxvw-73pfNot Applicable
https://github.com/argoproj/argo-workflows/blob/5291e0b01f94ba864f96f795bb500f2cfc5ad799/workflow/executor/executor.go#L1034-L1037Product
https://github.com/argoproj/argo-workflows/commit/6b92af23f35aed4d4de8b04adcaf19d68f006de1Patch
https://github.com/argoproj/argo-workflows/security/advisories/GHSA-xrqc-7xgx-c9vhExploit, Vendor Advisory
https://github.com/advisories/GHSA-p84v-gxvw-73pfNot Applicable
https://github.com/argoproj/argo-workflows/security/advisories/GHSA-xrqc-7xgx-c9vhExploit, Vendor Advisory

Timeline

Published: Dec 9, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-66626?

How severe is CVE-2025-66626?

CVE-2025-66626 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.57% probability of exploitation in the next 30 days.

How do I fix CVE-2025-66626?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-66626?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST