Argo Project Argo CD up to 3.3.14/3.4.9/3.5.3/3.6.0-rc1 Helm Plugin Loader unrestricted upload

Summaryinfo

A vulnerability labeled as critical has been found in Argo Project Argo CD up to 3.3.14/3.4.9/3.5.3/3.6.0-rc1. This vulnerability affects unknown code of the component Helm Plugin Loader. The manipulation results in unrestricted upload. This vulnerability is cataloged as CVE-2026-113709. The attack may be launched remotely. There is no exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability classified as critical has been found in Argo Project Argo CD up to 3.3.14/3.4.9/3.5.3/3.6.0-rc1. Affected is an unknown part of the component Helm Plugin Loader. The manipulation with an unknown input leads to a unrestricted upload vulnerability. CWE is classifying the issue as CWE-434. The product allows the attacker to upload or transfer files of dangerous types that can be automatically processed within the product's environment. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

Argo CD is a declarative, GitOps continuous delivery tool for Kubernetes. From 2.1.0 until 3.3.15, 3.4.10, 3.5.4, and 3.6.0-rc2, when an operator has enabled --enable-helm for kustomize build, helmGlobals.configHome can point Helm's config and data directories at a repository-controlled location. Helm automatically loads a downloader plugin from `<configHome>/.data/plugins` without a separate plugin-install step and executes its program inside argocd-repo-server when a helmCharts repository URL uses the plugin's protocol. The command runs as the repo-server user and can read repository credentials and other process-accessible data. An attacker can commit the Kustomization and plugin to a Git repository that an Application builds or upload the files through POST /api/v1/applications/manifestsWithFiles, also exposed by argocd app diff --local --server-side-generate. The upload path requires only Application get permission on an existing Application, without Application update or sync permission or repository write access. Both delivery paths require prior operator enablement of --enable-helm; deployments that do not enable it are not affected. Kustomize 4.1.0 first passed helmGlobals.configHome through to Helm. This issue is fixed in versions 3.3.15, 3.4.10, 3.5.4, and 3.6.0-rc2.

The advisory is shared for download at github.com. This vulnerability is traded as CVE-2026-113709 since 10/20/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1608.002.

Upgrading to version 3.3.15, 3.4.10, 3.5.4 or 3.6.0-rc2 eliminates this vulnerability.

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Productinfo

Type

• Project Management Software

Vendor

• Argo Project

Name

• Argo CD

Version

• 3.3.0
• 3.3.1
• 3.3.2
• 3.3.3
• 3.3.4
• 3.3.5
• 3.3.6
• 3.3.7
• 3.3.8
• 3.3.9
• 3.3.10
• 3.3.11
• 3.3.12
• 3.3.13
• 3.3.14
• 3.4.0
• 3.4.1
• 3.4.2
• 3.4.3
• 3.4.4
• 3.4.5
• 3.4.6
• 3.4.7
• 3.4.8
• 3.4.9
• 3.5.0
• 3.5.1
• 3.5.2
• 3.5.3
• 3.6.0-rc1

CPE 2.3info

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CPE 2.2info

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