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CVE-2026-54526— Argo Workflows: Incomplete fix for CVE-2026-31892: ArtifactGC.PodSpecPatch bypass of Strict/Secure templateReferencing

Quick assessment

Affected
argoproj argo-workflows
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

argoproj argo-workflows是argoproj的容器编排引擎。 Argo Project Argo Workflows 3.7.15之前版本和4.0.0至4.0.6之前版本存在权限许可和访问控制问题漏洞，该漏洞源于对WorkflowSpec的ArtifactGC字段的白名单验证不完整，允许用户注入任意战略合并补丁。

AI Predicted 8.8 Difficulty: Easy EPSS 0.55% · P44

Affected Version Matrix 2

VendorProduct Version RangeStatus
argoproj argo-workflows < 3.7.15 affected
>= 4.0.0, < 4.0.6 affected
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I. Basic Information for CVE-2026-54526

Vulnerability Information
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Vulnerability Title
Argo Workflows: Incomplete fix for CVE-2026-31892: ArtifactGC.PodSpecPatch bypass of Strict/Secure templateReferencing
Source: CVE Program / CVE List V5
Vulnerability Description
Argo Workflows is an open source container-native workflow engine for orchestrating parallel jobs on Kubernetes. Prior to 3.7.15 and 4.0.6, the allow-list fix for CVE-2026-31892 is incomplete because workflow/util/merge.go ValidateUserOverrides and SanitizeUserWorkflowSpec walk only the top-level fields of WorkflowSpec via reflection, and WorkflowSpec.ArtifactGC is allow-listed wholesale; the struct behind that field, WorkflowLevelArtifactGC, has a PodSpecPatch sub-field whose contents flow unmodified into util.ApplyPodSpecPatch on the artifact-GC pod, the same sink the original fix closed for WorkflowSpec.PodSpecPatch, so a user submitting a Workflow under templateReferencing: Strict or Secure (against a referenced WorkflowTemplate that declares an output artifact and setting spec.artifactGC.strategy: OnWorkflowCompletion) can still inject an arbitrary strategic merge patch into the artifact-GC pod, including hostPath volumes, privileged: true, arbitrary image and command, and hostNetwork: true, defeating the stated purpose of Strict/Secure reference mode. This issue is fixed in versions 3.7.15 and 4.0.6.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:H
Source: CVE Program / CVE List V5
Vulnerability Type
访问控制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Argo Project Argo Workflows 权限许可和访问控制问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
argoproj argo-workflows是argoproj的容器编排引擎。 Argo Project Argo Workflows 3.7.15之前版本和4.0.0至4.0.6之前版本存在权限许可和访问控制问题漏洞，该漏洞源于对WorkflowSpec的ArtifactGC字段的白名单验证不完整，允许用户注入任意战略合并补丁。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
argoproj argo-workflows < 3.7.15 -

II. Public POCs for CVE-2026-54526

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III. Intelligence Information for CVE-2026-54526

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Patches & Fixes for CVE-2026-54526 (2)

Vendor Advisories for CVE-2026-54526 (1)

IV. Related Vulnerabilities

Same product: argo-workflows
Same vendor: argoproj
Same weakness: CWE-284

V. Comments for CVE-2026-54526

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