Vulnerability-Lookup

GHSA-J6CW-G6P4-7HCH

Vulnerability from github – Published: 2026-10-09 16:37 – Updated: 2026-10-09 16:37

Summary

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

Details

Impact

Argo CD runs a shell command in the repo-server when it clones or fetches an SSH Git repository that has a proxy URL. The proxy host and port are copied into an SSH ProxyCommand. A host that contains shell metacharacters breaks out of that command and runs in the repo-server.

All versions from v2.11.0 onward are affected, including every currently supported release. v2.10.20 and earlier are not. The behavior was introduced in 9b27aeb1a4 (2024-01-09, #15864), the change that added SOCKS5 proxy support for SSH Git URLs, and was first released in v2.11.0.

The repository must use SSH. http, https, and socks5 proxy URLs all take this path when they are set on an SSH repository. An HTTPS Git repository uses the proxy as an HTTP proxy and does not build this command.

Anyone who can create or update a repository or a repository credential template can set the proxy. That includes a project-scoped repository permission, argocd repo add --proxy, and a repository Secret. A credential template applies its proxy to every matching SSH repository that does not have its own credentials. Argo CD runs the command when it tests the repository connection and on later fetches. The process can read other Git, Helm, and OCI credentials stored for the repo-server.

Patches

A patch for this vulnerability has been released in the following Argo CD versions:

v3.6.0-rc2
v3.5.4
v3.4.10
v3.3.15

The fix stops passing the proxy host and port through a shell.

Argo CD 2.x and 3.0 through 3.2 are out of support and will not receive a patch. Upgrade to a patched 3.3 or newer release.

Workarounds

There is no setting that keeps SSH repository proxies and removes the shell command.

Do not grant repository create or update to untrusted users, including project-scoped repository access. See RBAC resources and project-scoped repositories.
Do not set a proxy on an SSH repository or on a credential template that matches SSH repositories. The proxy field is documented in Configure repositories with proxy. Credential templates are documented in Credential templates. The --proxy flag is documented in argocd repo add.

An HTTPS Git repository with an HTTP proxy does not use this command. Review existing repository and credential-template Secrets for unexpected proxy values.

Credits

The Argo CD team would like to thank @kamil-sawicki, @yuvalelarat, @cherez0ff, @McCaulay, @gehan-psbc, @ria-labs-security, @parameter-ai-security, and @zwindler for responsibly disclosing this issue according to our security reporting guidelines.

References

Introducing commit: 9b27aeb1a4fb15d11a0f01cad65dea1fdfc60205 (#15864), first released in v2.11.0
Configure repositories with proxy

For more information

Open an issue in the Argo CD issue tracker or discussions
Join us on Slack in channel #argo-cd

Severity

8.8 (High)


                  
                    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Show details on source website

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{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/argoproj/argo-cd/v2"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.11.0"
            },
            {
              "last_affected": "2.14.21"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/argoproj/argo-cd/v3"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.0.0"
            },
            {
              "fixed": "3.3.15"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/argoproj/argo-cd/v3"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.4.0"
            },
            {
              "fixed": "3.4.10"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/argoproj/argo-cd/v3"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.5.0"
            },
            {
              "fixed": "3.5.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/argoproj/argo-cd/v3"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.6.0-rc1"
            },
            {
              "fixed": "3.6.0-rc2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.6.0-rc1"
      ]
    }
  ],
  "aliases": [
    "CVE-2026-55797"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-78"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-10-09T16:37:24Z",
    "nvd_published_at": null,
    "severity": "HIGH"
  },
  "details": "### Impact\n\nArgo CD runs a shell command in the repo-server when it clones or fetches an SSH Git repository that has a proxy URL. The proxy host and port are copied into an SSH `ProxyCommand`. A host that contains shell metacharacters breaks out of that command and runs in the repo-server.\n\nAll versions from v2.11.0 onward are affected, including every currently supported release. v2.10.20 and earlier are not. The behavior was introduced in [9b27aeb1a4](https://github.com/argoproj/argo-cd/commit/9b27aeb1a4fb15d11a0f01cad65dea1fdfc60205) (2024-01-09, [#15864](https://github.com/argoproj/argo-cd/pull/15864)), the change that added SOCKS5 proxy support for SSH Git URLs, and was first released in v2.11.0.\n\nThe repository must use SSH. `http`, `https`, and `socks5` proxy URLs all take this path when they are set on an SSH repository. An HTTPS Git repository uses the proxy as an HTTP proxy and does not build this command.\n\nAnyone who can create or update a repository or a repository credential template can set the proxy. That includes a project-scoped repository permission, `argocd repo add --proxy`, and a repository Secret. A credential template applies its proxy to every matching SSH repository that does not have its own credentials. Argo CD runs the command when it tests the repository connection and on later fetches. The process can read other Git, Helm, and OCI credentials stored for the repo-server.\n\n### Patches\n\nA patch for this vulnerability has been released in the following Argo CD versions:\n\n* v3.6.0-rc2\n* v3.5.4\n* v3.4.10\n* v3.3.15\n\nThe fix stops passing the proxy host and port through a shell.\n\nArgo CD 2.x and 3.0 through 3.2 are out of support and will not receive a patch. Upgrade to a patched 3.3 or newer release.\n\n### Workarounds\n\nThere is no setting that keeps SSH repository proxies and removes the shell command.\n\n* Do not grant repository create or update to untrusted users, including project-scoped repository access. See [RBAC resources](https://argo-cd.readthedocs.io/en/stable/operator-manual/rbac/#rbac-model-structure) and [project-scoped repositories](https://argo-cd.readthedocs.io/en/stable/user-guide/projects/#project-scoped-repositories-and-clusters).\n* Do not set a proxy on an SSH repository or on a credential template that matches SSH repositories. The proxy field is documented in [Configure repositories with proxy](https://argo-cd.readthedocs.io/en/stable/operator-manual/declarative-setup/#configure-repositories-with-proxy). Credential templates are documented in [Credential templates](https://argo-cd.readthedocs.io/en/stable/user-guide/private-repositories/#credential-templates). The `--proxy` flag is documented in [`argocd repo add`](https://argo-cd.readthedocs.io/en/stable/user-guide/commands/argocd_repo_add/).\n\nAn HTTPS Git repository with an HTTP proxy does not use this command. Review existing repository and credential-template Secrets for unexpected `proxy` values.\n\n### Credits\n\nThe Argo CD team would like to thank @kamil-sawicki, @yuvalelarat, @cherez0ff, @McCaulay, @gehan-psbc, @ria-labs-security, @parameter-ai-security, and @zwindler for responsibly disclosing this issue according to our [security reporting guidelines](https://github.com/argoproj/argo-cd/blob/master/SECURITY.md#reporting-a-vulnerability).\n\n### References\n\n* Introducing commit: [9b27aeb1a4fb15d11a0f01cad65dea1fdfc60205](https://github.com/argoproj/argo-cd/commit/9b27aeb1a4fb15d11a0f01cad65dea1fdfc60205) ([#15864](https://github.com/argoproj/argo-cd/pull/15864)), first released in v2.11.0\n* [Configure repositories with proxy](https://argo-cd.readthedocs.io/en/stable/operator-manual/declarative-setup/#configure-repositories-with-proxy)\n\n### For more information\n\n* Open an issue in [the Argo CD issue tracker](https://github.com/argoproj/argo-cd/issues) or [discussions](https://github.com/argoproj/argo-cd/discussions)\n* Join us on [Slack](https://argoproj.github.io/community/join-slack) in channel #argo-cd",
  "id": "GHSA-j6cw-g6p4-7hch",
  "modified": "2026-10-09T16:37:25Z",
  "published": "2026-10-09T16:37:24Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/argoproj/argo-cd/security/advisories/GHSA-j6cw-g6p4-7hch"
    },
    {
      "type": "WEB",
      "url": "https://github.com/argoproj/argo-cd/commit/1e3ddd0b7250aa23f489956b5fab8c13d0493a9f"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/argoproj/argo-cd"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Argo CD repo-server command injection via crafted SSH repository SOCKS5 proxy URL"
}

CVE-2026-55797 (GCVE-0-2026-55797)

Vulnerability from cvelistv5 – Published: 2026-10-09 16:43 – Updated: 2026-10-09 17:53

Title

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

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.

Severity

8.8 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-10-09 17:53 UTC

CWE

CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

Assigner

GitHub_M CNA under the mitre root

CNA scorecard C 72/100 over 7642 records in the last 180 days details

References

8 references

URL	Tags
https://github.com/argoproj/argo-cd/security/advi…	x_refsource_CONFIRM
https://github.com/argoproj/argo-cd/pull/15864	x_refsource_MISC
https://github.com/argoproj/argo-cd/commit/1e3ddd…	x_refsource_MISC
https://github.com/argoproj/argo-cd/commit/9b27ae…	x_refsource_MISC
https://github.com/argoproj/argo-cd/releases/tag/…	x_refsource_MISC
https://github.com/argoproj/argo-cd/releases/tag/…	x_refsource_MISC
https://github.com/argoproj/argo-cd/releases/tag/v3.5.4	x_refsource_MISC
https://github.com/argoproj/argo-cd/releases/tag/…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
argoproj	argo-cd	Affected: >= 2.11.0, <= 2.14.21 Affected: >= 3.0.0, < 3.3.15 Affected: >= 3.4.0, < 3.4.10 Affected: >= 3.5.0, < 3.5.4 Affected: = 3.6.0-rc1

Show details on NVD website

JSON

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{
  "containers": {
    "adp": [
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        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-55797",
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}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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Action not permitted

GHSA-J6CW-G6P4-7HCH

Impact

Patches

Workarounds

Credits

References

For more information

CVE-2026-55797 (GCVE-0-2026-55797)

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