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Fencer Vulns
high 8.8

CVE-2026-55797 json

Argo CD repo-server command injection via crafted SSH repository SOCKS5 proxy URL

published 2026-10-09 30 d ago modified 2026-10-21 19 d ago also BIT-argo-cd-2026-55797 , EUVD-2026-95912 , GHSA-j6cw-g6p4-7hch , GO-2026-6701

cvss
8.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.9%
EPSS 1.9% chance of exploitation in 30 days, percentile 79%
public exploits
0
none known

Summary

Argo CD is a declarative, GitOps continuous delivery tool for Kubernetes. From 2.11.0 until 3.3.15, 3.4.10, 3.5.4, and 3.6.0-rc2, the Argo CD repo-server is vulnerable to command injection when it clones, tests, or fetches an SSH Git repository configured with a proxy URL. The proxy host and port are embedded in an SSH ProxyCommand that is executed through a shell without neutralizing shell metacharacters. A user who can create or update a repository or repository credential template can supply a crafted proxy host to execute commands in the repo-server and access its Git, Helm, and OCI credentials. This issue is fixed in versions 3.3.15, 3.4.10, 3.5.4, and 3.6.0-rc2.

Patch / fix

  • go github.com/argoproj/argo-cd/v3 3.3.15, 3.4.10, 3.5.4, 3.6.0-rc2
  • bitnami argo-cd 3.3.15, 3.4.10, 3.5.4
  • linuxfoundation argo_continuous_delivery 3.3.15, 3.4.10, 3.5.4
  • linuxfoundation argo-cd 3.3.15, 3.4.10, 3.5.4

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-2026-55797 updated cvss 8.8

github.com/argoproj/argo-cd/v3: github.com/argoproj/argo-cd/v2: argo-cd: Arbitrary command execution via crafted SSH repository proxy configuration

  • Red Hat Openshift Data Foundation 4 odf4/odf-multicluster-rhel9-operator
    affected: no fix available
  • Red Hat OpenShift GitOps 1.20 openshift-gitops-1/argocd-rhel9 1791184378
    fixed: vendor fix RHSA-2026:77273
  • Red Hat OpenShift GitOps 1.21 openshift-gitops-1/argocd-rhel9 1791252092
    fixed: vendor fix RHSA-2026:77269
  • Red Hat OpenShift GitOps 1.22 openshift-gitops-1/argocd-rhel9 1791192797
    fixed: vendor fix RHSA-2026:77267
  • 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
    not affected: component not present
  • Red Hat OpenShift GitOps 1.20 openshift-gitops-1/dex-rhel9 1791183962, openshift-gitops-1/gitops-rhel9 1791183847, openshift-gitops-1/must-gather-rhel9 1791183724, openshift-gitops-1/argocd-agent-rhel9 1791183980, openshift-gitops-1/argo-rollouts-rhel9 1791184750, openshift-gitops-1/console-plugin-rhel9 1791184352, +4 more Red Hat OpenShift GitOps 1.21 openshift-gitops-1/dex-rhel9 1791253159, openshift-gitops-1/gitops-rhel9 1791252015, openshift-gitops-1/must-gather-rhel9 1791253104, openshift-gitops-1/argocd-agent-rhel9 1791261215, openshift-gitops-1/argo-rollouts-rhel9 1791251919, openshift-gitops-1/console-plugin-rhel9 1791252544, +4 more Red Hat OpenShift GitOps 1.22 openshift-gitops-1/dex-rhel9 1791193725, openshift-gitops-1/gitops-rhel9 1791192820, openshift-gitops-1/must-gather-rhel9 1791192360, openshift-gitops-1/argocd-agent-rhel9 1791193074, openshift-gitops-1/argo-rollouts-rhel9 1791192808, openshift-gitops-1/console-plugin-rhel9 1791192905, +7 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
total
Assessed
30 d ago

Exploit prediction

1.87% chance of exploitation in the next 30 days, higher than 79% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
GitHub 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
OSV 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected packages

ecosystem package affected fixed in
go github.com/argoproj/argo-cd/v2
>=2.11.0, <=2.14.21
>=2.11.0
 no fix listed
go github.com/argoproj/argo-cd/v3
>=3.0.0, <3.3.15
>=3.4.0, <3.4.10
>=3.5.0, <3.5.4
>=3.6.0-rc1, <3.6.0-rc2
3.3.15
3.4.10
3.5.4
3.6.0-rc2
bitnami argo-cd
>=2.11.0, <3.3.15
>=3.4.0, <3.4.10
>=3.5.0, <3.5.4
3.3.15
3.4.10
3.5.4
go github.com/argoproj/argo-cd
all versions
 no fix listed

Affected products

  • argoproj argo-cd

Classification

Weakness
  • CWE-78 Improper Neutralization of Special Elements used in an OS Command

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.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.