Command injection in Argo CD repo-server via SSH repository proxy URL
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Partial Red Hat: 3 fixed, 1 without a fix
Attack profile from CVSS 3.1 · CNA. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-78.
Summary
Argo CD from 2.11.0 through 2.14.21, from 3.0.0 before 3.3.15, from 3.4.0 before 3.4.10, and from 3.5.0 before 3.5.4 is affected, along with version 3.6.0-rc1. The repo-server places an SSH repository proxy host and port into a ProxyCommand that runs through a shell without neutralizing shell metacharacters, which is CWE-78. A user who can create or update a repository or repository credential template can supply a crafted proxy host to run commands in the repo-server and reach its Git, Helm, and OCI credentials.
Written with Claude Haiku 5.5 from the sources below · 2026-11-06
Description from the CNA
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| argoproj | argo-cd | 2.11.0 – 2.14.21; 3.0.0 to before 3.3.15; 3.4.0 to before 3.4.10; 3.5.0 to before 3.5.4; = 3.6.0-rc1 | 3.3.15, 3.4.10, 3.5.4 | Patch available | CNA |
| — | github.com/argoproj/argo-cd/v2 (Go) | 2.11.0 – 2.14.21 | — | No fix listed | GHSA-j6cw-g6p4-7hch |
| — | github.com/argoproj/argo-cd/v3 (Go) | 3.0.0 to before 3.3.15 | 3.3.15 | Patch available | GHSA-j6cw-g6p4-7hch |
| — | github.com/argoproj/argo-cd/v3 (Go) | 3.4.0 to before 3.4.10 | 3.4.10 | Patch available | GHSA-j6cw-g6p4-7hch |
| — | github.com/argoproj/argo-cd/v3 (Go) | 3.5.0 to before 3.5.4 | 3.5.4 | Patch available | GHSA-j6cw-g6p4-7hch |
| — | github.com/argoproj/argo-cd/v3 (Go) | 3.6.0-rc1 to before 3.6.0-rc2 | 3.6.0-rc2 | Patch available | GHSA-j6cw-g6p4-7hch |
- argo-cd Vendorargoproj Affected 2.11.0 – 2.14.21; 3.0.0 to before 3.3.15; 3.4.0 to before 3.4.10; 3.5.0 to before 3.5.4; = 3.6.0-rc1 Fixed in 3.3.15, 3.4.10, 3.5.4 Patch available CNA
- github.com/argoproj/argo-cd/v2 (Go) Vendor— Affected 2.11.0 – 2.14.21 Fixed in — No fix listed GHSA-j6cw-g6p4-7hch
- github.com/argoproj/argo-cd/v3 (Go) Vendor— Affected 3.0.0 to before 3.3.15 Fixed in 3.3.15 Patch available GHSA-j6cw-g6p4-7hch
- github.com/argoproj/argo-cd/v3 (Go) Vendor— Affected 3.4.0 to before 3.4.10 Fixed in 3.4.10 Patch available GHSA-j6cw-g6p4-7hch
- github.com/argoproj/argo-cd/v3 (Go) Vendor— Affected 3.5.0 to before 3.5.4 Fixed in 3.5.4 Patch available GHSA-j6cw-g6p4-7hch
- github.com/argoproj/argo-cd/v3 (Go) Vendor— Affected 3.6.0-rc1 to before 3.6.0-rc2 Fixed in 3.6.0-rc2 Patch available GHSA-j6cw-g6p4-7hch
Remediation
Upgrade Argo CD to 3.3.15, 3.4.10, 3.5.4, or 3.6.0-rc2. The sources list no fixed version for github.com/argoproj/argo-cd/v2. Red Hat fixes OpenShift GitOps 1.20 in RHSA-2026:77273, 1.21 in RHSA-2026:77269 and 1.22 in RHSA-2026:77267. Red Hat lists no available plan for Red Hat Openshift Data Foundation 4.
Written with Claude Haiku 5.5 from the sources below · 2026-11-06
- Fix · CNA argo-cd (argoproj) Fixed in 3.3.15, 3.4.10, 3.5.4
- Fix · GHSA-j6cw-g6p4-7hch github.com/argoproj/argo-cd/v3 (Go) Fixed in 3.3.15 Advisory →
- Fix · GHSA-j6cw-g6p4-7hch github.com/argoproj/argo-cd/v3 (Go) Fixed in 3.4.10 Advisory →
- Fix · GHSA-j6cw-g6p4-7hch github.com/argoproj/argo-cd/v3 (Go) Fixed in 3.5.4 Advisory →
- Fix · GHSA-j6cw-g6p4-7hch github.com/argoproj/argo-cd/v3 (Go) Fixed in 3.6.0-rc2 Advisory →
Red Hat 3 advisories
- RHSA-2026:77273 Released 2026-10-07 · Red Hat rating ImportantRed Hat OpenShift GitOps v1.20.8 security update
- Red Hat OpenShift GitOps 1.20 registry.redhat.io/openshift-gitops-1/argocd-rhel9, registry.redhat.io/openshift-gitops-1/dex-rhel9
- RHSA-2026:77269 Released 2026-10-07 · Red Hat rating ImportantRed Hat OpenShift GitOps v1.21.5 security update
- Red Hat OpenShift GitOps 1.21 registry.redhat.io/openshift-gitops-1/argocd-rhel9, registry.redhat.io/openshift-gitops-1/dex-rhel9, registry.redhat.io/openshift-gitops-1/gitops-rhel9-operator
- RHSA-2026:77267 Released 2026-10-07 · Red Hat rating ImportantRed Hat OpenShift GitOps v1.22.1 security update
- Red Hat OpenShift GitOps 1.22 registry.redhat.io/openshift-gitops-1/argocd-rhel9, registry.redhat.io/openshift-gitops-1/dex-rhel9
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Openshift Data Foundation 4 | Affected | No fix yet |
| Red Hat OpenShift GitOps 1.20 | Fixed | RHSA-2026:77273 |
| Red Hat OpenShift GitOps 1.21 | Fixed | RHSA-2026:77269 |
| Red Hat OpenShift GitOps 1.22 | Fixed | RHSA-2026:77267 |
Not affected: 4 products
- Red Hat OpenShift GitOps
- Red Hat OpenShift GitOps 1.20
- Red Hat OpenShift GitOps 1.21
- Red Hat OpenShift GitOps 1.22
Timeline
- 2026-10-09 Threatist record created from CVE-2026-55797
- 2026-10-09 Alias added: GHSA-j6cw-g6p4-7hch
- 2026-10-11 Priority changed: LOW → MEDIUM
- 2026-10-20 Affected versions changed · Red Hat
- 2026-10-20 CVSS score added · Red Hat
- 2026-11-03 Fix available: RHSA-2026:90323 · Red Hat
- 2026-11-03 Fix available: RHSA-2026:90337 · Red Hat
- 2026-11-03 Fix available: Red Hat OpenShift GitOps 1.20, Red Hat OpenShift GitOps 1.21 · Red Hat
- 2026-11-05 Fix available: Red Hat OpenShift GitOps 1.22 · Red Hat
- 2026-11-05 Affected versions changed · Red Hat
- 2026-11-06 Fix available: RHSA-2026:77267 · Red Hat
- 2026-11-06 Fix available: RHSA-2026:77269 · Red Hat
- 2026-11-06 Fix available: RHSA-2026:77273 · Red Hat
References
Other 9
- https://github.com/argoproj/argo-cd/security/advisories/GHSA-j6cw-g6p4-7hch
- https://github.com/argoproj/argo-cd/pull/15864
- https://github.com/argoproj/argo-cd/commit/1e3ddd0b7250aa23f489956b5fab8c13d0493a9f
- https://github.com/argoproj/argo-cd/commit/9b27aeb1a4fb15d11a0f01cad65dea1fdfc60205
- https://github.com/argoproj/argo-cd/releases/tag/v3.3.15
- https://github.com/argoproj/argo-cd/releases/tag/v3.4.10
- https://github.com/argoproj/argo-cd/releases/tag/v3.5.4
- https://github.com/argoproj/argo-cd/releases/tag/v3.6.0-rc2
- https://github.com/argoproj/argo-cd
More argoproj vulnerabilities
- TI-2026-22564 Argo Workflows has unauthorized access to Argo Workflows Template CVSS 3.1CRITICAL 9.8
- TI-2024-14377 Argo CD vulnerable to Bypassing of Brute Force Protection via Application Crash and In-Memory Data Loss CVSS 3.1CRITICAL 9.8
- TI-2024-14383 Argo CD vulnerable to Bypassing of Rate Limit and Brute Force Protection Using Cache Overflow CVSS 3.1CRITICAL 9.1
- TI-2026-31086 ArgoCD ServerSideDiff is vulnerable to Kubernetes Secret Extraction CVSS 3.1CRITICAL 9.6
- TI-2023-20919 Cluster secret might leak in cluster details page in Argo CD CVSS 3.1CRITICAL 9.9
- TI-2026-30603 Argo Workflows: Unauthenticated Memory Exhaustion (DoS) in Webhook Interceptor CVSS 4.0HIGH 8.2
Sources
- CVE-2026-55797 · CVE Program
- CVE-2026-55797 · NVD
- FIRST EPSS
- GHSA-j6cw-g6p4-7hch · GitHub Advisory Database · CC BY 4.0
- CVE-2026-55797 · Red Hat security data · CC BY 4.0
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