RCE in Argoproj Argo-Workflows
CVE-2025-66626
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H.
EPSS exploit prediction
EPSS: 0.007 (51.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 52nd percentile — 51.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000
Affected products
- Argoproj Argo-Workflows — versions github.com/argoproj/argo-workflows/v3 >= 3.7.0, < 3.7.5, github.com/argoproj/argo-workflows/v3 < 3.6.14, github.com/argoproj/argo-workflows <= 2.5.3-rc4
- Argoproj Argo Workflows
Weakness classification (CWE)
References
- github.com/argoproj/argo-workflows/security/advisories/GHSA-xrqc-7xgx-c9vh (Exploit, Vendor Advisory)
- github.com/argoproj/argo-workflows/commit/6b92af23f35aed4d4de8b04adcaf19d68f006… (Patch)
- github.com/advisories/GHSA-p84v-gxvw-73pf (Not Applicable)
- github.com/argoproj/argo-workflows/blob/5291e0b01f94ba864f96f795bb500f2cfc5ad79… (Product)
Frequently asked questions
- What is CVE-2025-66626?
- CVE-2025-66626 is a high-severity vulnerability in Argoproj Argo-Workflows, classified under Relative Path Traversal. CVSS score: 8.1/10. Published 2025-12-09.
- How severe is CVE-2025-66626?
- High severity. CVSS v3 base score is 8.1 out of 10.