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TI-2026-63250 Aliases CVE-2026-93991GHSA-3fwg-9p8x-37mv

Argo Workflows 4.1.0 through 4.1.3 Cross-Namespace Disclosure via Negated Selector

Priority LOW 36CWE-639Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Security bypass
Confidentiality · integrity · availability
High · None · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-639.

Summary

Argo Workflows versions 4.1.0 through 4.1.3 contain an authorization bypass vulnerability in ListArchivedWorkflows that fails to apply cluster-scoped access review when the metadata.namespace field selector uses the NotEquals operator. Attackers with namespace-scoped list permissions can use a negated namespace field selector to retrieve archived workflows from all other namespaces, exposing spec arguments, parameter values, and annotations.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00436 38th percentileScored 2026-11-07
Fix Fixed argo-workflows (argoproj): 4.1.4

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
argoprojargo-workflows4.1.0 to before 4.1.44.1.4Patch availableCNA
  • argo-workflows Vendorargoproj Affected 4.1.0 to before 4.1.4 Fixed in 4.1.4 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:argoproj:argo_workflows:*:*:*:*:*:*:*:*——argoproj
  • cpe:2.3:a:argoproj:argo_workflows:*:*:*:*:*:*:*:* Versions — — ·argoproj

Remediation

  • Fix · CNA argo-workflows (argoproj) Fixed in 4.1.4

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-93991
  2. 2026-10-03 Alias added: GHSA-3fwg-9p8x-37mv

References

Patch 1

Advisory 1

Other 2

  • TI-2026-22564 Argo Workflows has unauthorized access to Argo Workflows Template CVSS 3.1CRITICAL 9.8
  • TI-2024-14377 Argo CD vulnerable to Bypassing of Brute Force Protection via Application Crash and In-Memory Data Loss CVSS 3.1CRITICAL 9.8
  • TI-2024-14383 Argo CD vulnerable to Bypassing of Rate Limit and Brute Force Protection Using Cache Overflow CVSS 3.1CRITICAL 9.1
  • TI-2026-31086 ArgoCD ServerSideDiff is vulnerable to Kubernetes Secret Extraction CVSS 3.1CRITICAL 9.6
  • TI-2023-20919 Cluster secret might leak in cluster details page in Argo CD CVSS 3.1CRITICAL 9.9
  • TI-2026-30603 Argo Workflows: Unauthenticated Memory Exhaustion (DoS) in Webhook Interceptor CVSS 4.0HIGH 8.2
See all 87 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences