argoproj argo-workflows up to 3.6.16/3.7.7 Artifact Directory Listing cross site scripting

Summaryinfo

A vulnerability was found in argoproj argo-workflows up to 3.6.16/3.7.7. It has been classified as problematic. This impacts an unknown function of the component Artifact Directory Listing Handler. The manipulation leads to cross site scripting. This vulnerability is listed as CVE-2026-23960. The attack may be initiated remotely. There is no available exploit. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in argoproj argo-workflows up to 3.6.16/3.7.7. This issue affects an unknown code block of the component Artifact Directory Listing Handler. The manipulation with an unknown input leads to a cross site scripting vulnerability. Using CWE to declare the problem leads to 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. Impacted is integrity. The summary by CVE is:

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.

It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2026-23960 since 01/19/2026. The exploitation is known to be difficult. The attack may be initiated remotely. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1059.007 according to MITRE ATT&CK.

Upgrading to version 3.6.17 or 3.7.8 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch 159a5c56285ecd4d3bb0a67aeef4507779a44e17 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-3596). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Vendor

• argoproj

Name

• argo-workflows

Version

• 3.6.0
• 3.6.1
• 3.6.2
• 3.6.3
• 3.6.4
• 3.6.5
• 3.6.6
• 3.6.7
• 3.6.8
• 3.6.9
• 3.6.10
• 3.6.11
• 3.6.12
• 3.6.13
• 3.6.14
• 3.6.15
• 3.6.16
• 3.7.0
• 3.7.1
• 3.7.2
• 3.7.3
• 3.7.4
• 3.7.5
• 3.7.6
• 3.7.7

License

• open-source

Website

• Product: https://github.com/argoproj/argo-workflows/

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Be aware that VulDB is the high quality source for vulnerability data.

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