CVE-2026-23960
Unknown Unknown - Not Provided
Stored XSS in Argo Workflows Artifact Directory Enables Privilege Escalation

Publication date: 2026-01-21

Last updated on: 2026-02-17

Assigner: GitHub, Inc.

Description
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.
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Meta Information
Published
2026-01-21
Last Modified
2026-02-17
Generated
2026-06-16
AI Q&A
2026-01-22
EPSS Evaluated
2026-06-14
NVD
CVE-2026-23960
Affected Vendors & Products
Showing 2 associated CPEs
Vendor Product Version / Range
argoproj argo_workflows to 3.6.17 (exc)
argoproj argo_workflows From 3.7.0 (inc) to 3.7.8 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-79 The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.
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Executive Summary

This vulnerability is a stored Cross-Site Scripting (XSS) issue in Argo Workflows prior to versions 3.6.17 and 3.7.8. It occurs in the artifact directory listing, allowing any workflow author to inject and execute arbitrary JavaScript code in another user's browser under the Argo Server origin. This means that malicious scripts can run with the victim's privileges within the Argo Server environment.

Impact Analysis

The vulnerability can allow an attacker who is a workflow author to execute arbitrary JavaScript in the browsers of other users. This can lead to unauthorized API actions being performed with the victim's privileges, potentially compromising data integrity, confidentiality, and availability within the Argo Workflows environment.

Mitigation Strategies

Upgrade Argo Workflows to version 3.6.17 or 3.7.8 or later, as these versions contain fixes for the stored XSS vulnerability.

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