{"id":"CVE-2026-113708","published":"2026-10-20T19:17:33.287","lastModified":"2026-10-20T19:59:00.607","description":"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.","cvssScore":9.9,"cvssSeverity":"CRITICAL","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","cwes":["CWE-88"],"vendors":[],"products":[],"references":[{"url":"https://argo-cd.readthedocs.io/en/stable/user-guide/kustomize/#custom-kustomize-versions","tags":[]},{"url":"https://github.com/argoproj/argo-cd/commit/25badeb7a1e154805340bb7237e0ce671f3772dd","tags":[]},{"url":"https://github.com/argoproj/argo-cd/pull/12299","tags":[]},{"url":"https://github.com/argoproj/argo-cd/releases/tag/v3.3.15","tags":[]},{"url":"https://github.com/argoproj/argo-cd/releases/tag/v3.4.10","tags":[]},{"url":"https://github.com/argoproj/argo-cd/releases/tag/v3.5.4","tags":[]},{"url":"https://github.com/argoproj/argo-cd/releases/tag/v3.6.0-rc2","tags":[]},{"url":"https://github.com/argoproj/argo-cd/security/advisories/GHSA-9v9p-x54c-58gc","tags":[]},{"url":"https://github.com/argoproj/argo-cd/security/advisories/GHSA-j6cw-g6p4-7hch","tags":[]}],"exploitRefs":[{"url":"https://github.com/argoproj/argo-cd/commit/25badeb7a1e154805340bb7237e0ce671f3772dd","tags":[]},{"url":"https://github.com/argoproj/argo-cd/pull/12299","tags":[]},{"url":"https://github.com/argoproj/argo-cd/releases/tag/v3.3.15","tags":[]},{"url":"https://github.com/argoproj/argo-cd/releases/tag/v3.4.10","tags":[]},{"url":"https://github.com/argoproj/argo-cd/releases/tag/v3.5.4","tags":[]},{"url":"https://github.com/argoproj/argo-cd/releases/tag/v3.6.0-rc2","tags":[]},{"url":"https://github.com/argoproj/argo-cd/security/advisories/GHSA-9v9p-x54c-58gc","tags":[]},{"url":"https://github.com/argoproj/argo-cd/security/advisories/GHSA-j6cw-g6p4-7hch","tags":[]}],"hasPoc":true,"ai":{"summary":"Argo CD's Kustomize integration allows command execution via crafted Git URLs with local transport (file://) that bypasses proper option separation, enabling attackers to execute arbitrary commands as the repo-server user when processing Kustomization manifests.","exploitability":"Exploitation is relatively straightforward for attackers with write access to Git repositories or the ability to upload files via POST /api/v1/applications/manifestsWithFiles endpoint, requiring only Application get permission on an existing Application.","blast_radius":"The impact is critical as attackers can execute arbitrary commands with repo-server privileges, potentially accessing repository credentials and sensitive data, while the local transport does not require egress permissions to execute.","remediation":"Upgrade Argo CD to version 3.3.15, 3.4.10, 3.5.4, or 3.6.0-rc2 to fix the Kustomize option separator issue.","detection":"No reliable host or network indicator is derivable from the published description.","tags":["kubernetes","rce","gitops","kustomize"],"model":"garnet-coder","analyzedAt":"2026-10-21T01:19:51.058Z"}}