Paper/Archive/CVE-2026-113708

CVE-2026-113708

argoproj argo-cd — Argo CD: A Kustomize remote ref can run commands in the repo-server

Description · from the CVE record

Argo CD is a declarative, GitOps continuous delivery tool for Kubernetes. From 2.7.0 until 3.3.15, 3.4.10, 3.5.4, and 3.6.0-rc2, Kustomize passes ref or version query values from remote resource, base, or component URLs to git fetch without an end-of-options separator. A leading-hyphen value can be parsed as --upload-pack and execute a command inside argocd-repo-server when the remote uses a local transport such as file://. Git does not run the supplied command for an https:// remote. The local transport does not leave the pod, so blocking repo-server egress does not prevent the execution. The command runs as the repo-server user, can read repository credentials and other process-accessible data, and can return output through manifest-generation errors. An attacker can commit a Kustomization to a Git repository that an Application builds or upload 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. Kustomize 5.0.0 introduced acceptance of file://, whereas 4.5.7 rejects that transport; replacing the affected Kustomize with a newer version alone does not correct the missing option separator. This issue is fixed in versions 3.3.15, 3.4.10, 3.5.4, and 3.6.0-rc2.

Affected

ProductAffectedFixed inSource
argo-cd>= 2.7.0, < 3.3.15–CNA
argo-cd>= 3.4.0-rc1, < 3.4.10–CNA
argo-cd>= 3.5.0-rc1, < 3.5.4–CNA
argo-cd>= 3.6.0-rc1, < 3.6.0-rc2–CNA

Scores by source

GitHub_M (CNA)9.9CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: total

References

refgithub.com/argoproj/argo-cd/security/advisories/GHSA-9v9p-x54c-58gcrefgithub.com/argoproj/argo-cd/security/advisories/GHSA-j6cw-g6p4-7hchrefgithub.com/argoproj/argo-cd/pull/12299refgithub.com/argoproj/argo-cd/commit/25badeb7a1e154805340bb7237e0ce671f3772ddrefargo-cd.readthedocs.io/en/stable/user-guide/kustomize/#custom-kustomize-versionsrefgithub.com/argoproj/argo-cd/releases/tag/v3.3.15refgithub.com/argoproj/argo-cd/releases/tag/v3.4.10refgithub.com/argoproj/argo-cd/releases/tag/v3.5.4refgithub.com/argoproj/argo-cd/releases/tag/v3.6.0-rc2