XSS in Argoproj Argo-Workflows
CVE-2026-23960
Argo Workflows is an open source container-native workflow engine for orchestrating parallel jobs on Kubernetes. Prior to versions 3.6.17 and 3.7.8, stored XSS in the artifact directory listing allows any workflow author to execute arbitrary JavaScript in another user’s browser under the Argo Server origin, enabling API actions with the victim’s privileges. Versions 3.6.17 and 3.7.8 fix the issue.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.004 (34.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 34th percentile — 34.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: +0.000
Affected products
- Argoproj Argo-Workflows — versions < 3.6.17, >= 3.7.0, < 3.7.8
- Argoproj Argo Workflows
Weakness classification (CWE)
References
- github.com/argoproj/argo-workflows/security/advisories/GHSA-cv78-6m8q-ph82 (Exploit, Vendor Advisory)
- github.com/argoproj/argo-workflows/commit/159a5c56285ecd4d3bb0a67aeef4507779a44… (Patch)
- github.com/argoproj/argo-workflows/blob/9872c296d29dcc5e9c78493054961ede9fc3079… (Product)
- github.com/argoproj/argo-workflows/releases/tag/v3.6.17 (Product, Release Notes)
- github.com/argoproj/argo-workflows/releases/tag/v3.7.8 (Product, Release Notes)
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Frequently asked questions
- What is CVE-2026-23960?
- CVE-2026-23960 is a medium-severity vulnerability in Argoproj Argo-Workflows, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2026-01-21.
- How severe is CVE-2026-23960?
- Medium severity. CVSS v3 base score is 5.4 out of 10.