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Fencer Vulns
high 8.9

CVE-2026-15416 json

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

published 2026-07-14 3 mo ago modified 2026-08-11 2 mo ago also EUVD-2026-43648

cvss
8.9
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 40%
public exploits
0
none known

Summary

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.

Patch / fix

  • argoproj argo-helm 10.0.0
  • Red Hat Red Hat OpenShift GitOps 1.19 1785149260, 1785171339

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-15416 updated cvss 8.9

argo-cd: Argo CD unauthenticated remote code execution in repo-server via GenerateManifest gRPC endpoint

  • Red Hat OpenShift GitOps openshift-gitops-1/argocd-rhel9, openshift-gitops-1/gitops-rhel8, openshift-gitops-1/argocd-agent-rhel8, openshift-gitops-1/gitops-operator-bundle, openshift-gitops-1/argocd-image-updater-rhel8
    affected: workaround, no fix available, no fix planned “Out of support scope”
  • Red Hat OpenShift GitOps 1.19 openshift-gitops-1/argocd-rhel8 1785149260, openshift-gitops-1/gitops-rhel8-operator 1785171339
    fixed: vendor fix RHSA-2026:52857
  • Red Hat Openshift Data Foundation 4 odf4/odf-multicluster-rhel9-operator Red Hat OpenShift GitOps openshift-gitops-1/gitops-rhel9, openshift-gitops-1/argocd-agent-rhel9, openshift-gitops-1/gitops-rhel9-operator, openshift-gitops-1/argocd-image-updater-rhel9 Red Hat OpenShift GitOps 1.19 openshift-gitops-1/dex-rhel8 1785148567, openshift-gitops-1/argocd-rhel9 1785211040, openshift-gitops-1/gitops-rhel8 1785172359, openshift-gitops-1/must-gather-rhel8 1785148786, openshift-gitops-1/argocd-agent-rhel8 1785148729, openshift-gitops-1/argo-rollouts-rhel8 1785150399, +4 more
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
3 mo ago

Exploit prediction

0.47% chance of exploitation in the next 30 days, higher than 40% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 8.9 CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L

Affected products

  • argoproj argo-helm
  • Red Hat Red Hat OpenShift GitOps 1.19
  • Red Hat Red Hat Openshift Data Foundation 4
  • Red Hat Red Hat OpenShift GitOps

Classification

Weakness
  • CWE-306 Missing Authentication for Critical Functionality

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.