Copyright © 2012 Red Hat, Inc. All rights reserved. Important 2026-07-01T00:00:00 argo-cd: Argo CD unauthenticated remote code execution in repo-server via GenerateManifest gRPC endpoint 8.9 CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L CWE-306

A flaw was identified in Argo CD, the GitOps engine used by Red Hat OpenShift GitOps, that could allow an unauthenticated attacker with network access to the Argo CD repo-server to achieve remote code execution. Under certain conditions, the attacker may then manipulate cached data to deploy malicious Kubernetes resources to managed clusters, potentially resulting in complete cluster compromise.

A flaw was identified in Argo CD, the GitOps engine used by Red Hat OpenShift GitOps, that could allow an unauthenticated attacker with network access to the Argo CD repo-server to achieve remote code execution. Under certain conditions, the attacker may then manipulate cached data to deploy malicious Kubernetes resources to managed clusters, potentially resulting in complete cluster compromise.

Red Hat is aware of a critical, publicly disclosed remote code execution vulnerability affecting the Argo CD repo-server. Under certain conditions, an unauthenticated attacker with network access to the repo-server gRPC interface could execute arbitrary code and, as part of a multi-stage attack involving the Argo CD Redis cache, potentially compromise Kubernetes clusters managed by Argo CD. Red Hat OpenShift GitOps versions 1.20 and 1.21 are not affected by this vulnerability. The upstream Argo CD flaw requires unauthenticated network access to the repo-server gRPC endpoint and the Redis database. In Red Hat OpenShift GitOps 1.20 and above, Kubernetes NetworkPolicies are enabled by default, restricting ingress to these internal components. As a result, the unauthenticated gRPC call path required for exploitation is not reachable from other pods in the cluster, and the attack chain cannot be initiated. Limit network access to the Argo CD repo-server gRPC endpoint to trusted internal components using Kubernetes NetworkPolicy or equivalent network access controls. Do not expose the repo-server outside the cluster or to untrusted networks. Restrict access to the associated Redis service and update to a fixed version once one becomes available. Red Hat Openshift Data Foundation 4 Not affected odf4/odf-multicluster-rhel9-operator Red Hat OpenShift GitOps Out of support scope openshift-gitops-1/argocd-agent-rhel8 Red Hat OpenShift GitOps Not affected openshift-gitops-1/argocd-agent-rhel9 Red Hat OpenShift GitOps Affected openshift-gitops-1/argocd-image-updater-rhel8 Red Hat OpenShift GitOps Not affected openshift-gitops-1/argocd-image-updater-rhel9 Red Hat OpenShift GitOps Affected openshift-gitops-1/argocd-rhel8 Red Hat OpenShift GitOps Out of support scope openshift-gitops-1/argocd-rhel9 Red Hat OpenShift GitOps Affected openshift-gitops-1/gitops-operator-bundle Red Hat OpenShift GitOps Affected openshift-gitops-1/gitops-rhel8 Red Hat OpenShift GitOps Affected openshift-gitops-1/gitops-rhel8-operator Red Hat OpenShift GitOps Not affected openshift-gitops-1/gitops-rhel9 Red Hat OpenShift GitOps Not affected openshift-gitops-1/gitops-rhel9-operator https://www.cve.org/CVERecord?id=CVE-2026-15416 https://nvd.nist.gov/vuln/detail/CVE-2026-15416 https://github.com/argoproj/argo-helm/commit/0f245ab https://github.com/argoproj/argo-helm/security/advisories/GHSA-47m3-95c7-g2g8 https://thehackernews.com/2026/07/unpatched-argo-cd-repo-server-flaw.html https://www.synacktiv.com/en/publications/caught-in-the-octopus-trap-unauthenticated-rce-in-argo-cd-with-codeql