CVE-2026-23960 Argo Workflows affected by stored XSS in the artifact directory listing
Stored XSS in Argo Workflows allows attackers to execute arbitrary JavaScript in victims' browsers, enabling unauthorized API actions.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2026-23960?
CVE-2026-23960 is a high-severity cross-site scripting vulnerability in argoproj argo-workflows, published on 21 Jan 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official 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.
Weakness: CWE-79
Which versions are affected by CVE-2026-23960?
10 open source packages ship an affected version, including github.com/argoproj/argo-workflows/v3, argo-workflows and github.com/argoproj/argo-workflows. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
github.com/argoproj/argo-workflows/v3 Go | All versions | 3.6.17, 3.7.8 |
github.com/argoproj/argo-workflows/v3 Go | All versions | 3.6.17 |
github.com/argoproj/argo-workflows/v3 Go | All versions | 3.6.17 |
github.com/argoproj/argo-workflows/v3 Go | From 3.7.0 | 3.7.8 |
github.com/argoproj/argo-workflows/v3 Go | From 3.7.0 | 3.7.8 |
argo-workflows Bitnami | All versions | 3.6.17, 3.7.8 |
4 more packages
github.com/argoproj/argo-workflows Go | All versions | None |
github.com/argoproj/argo-workflows Go | All versions to 2.5.3-rc4 | None |
github.com/argoproj/argo-workflows Go | All versions to 2.5.3-rc4 | None |
github.com/argoproj/argo-workflows/v2 Go | All versions | None |
Products include Argoproj Argo Workflows.
How do I fix CVE-2026-23960?
Upgrade github.com/argoproj/argo-workflows/v3 to a fixed version for your release line: 3.6.17 or 3.7.8.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-23960 being exploited?
There is no known exploitation of CVE-2026-23960 in the wild and no public exploit code.
Other vulnerabilities in argoproj argo-workflows
- CVE-2026-28229 Argo Workflows has unauthorized access to Argo Workflows Template
- CVE-2026-54526 Argo Workflows: Incomplete fix for CVE-2026-31892: ArtifactGC.PodSpecPatch bypass of Strict/Secure templateReferencing
- CVE-2026-31892 WorkflowTemplate Security Bypass via podSpecPatch in Strict/Secure Reference Mode
- CVE-2026-42295 Argo Workflows: Exposure of artifact repository credentials
- CVE-2026-42297 Argo Workflows Is Missing Authorization in Sync ConfigMap Provider
Sources
Also known as BIT-argo-workflows-2026-23960, GHSA-cv78-6m8q-ph82, GO-2026-4350, MINI-2rq9-h44c-3w4m, MINI-7qqg-3mw8-gqg3, MINI-8chw-9q8q-3pmf and 3 more.