Vulnerability-Lookup

CVE-2026-73667 (GCVE-0-2026-73667)

Vulnerability from cvelistv5 – Published: 2026-08-13 21:43 – Updated: 2026-08-17 17:18

Title

OpenChoreo: Authenticated OS command injection via OpenChoreo Workflow Plane templates enables code execution in privileged pods

Summary

OpenChoreo is a complete, open-source developer platform for Kubernetes. Prior to 1.0.4, 1.1.4, and 1.2.0-rc.2, OpenChoreo Workflow Plane templates under samples/getting-started/workflow-templates/ interpolated developer-controlled workflow parameters into shell program text executed through sh -c instead of passing the values through container.env, allowing arbitrary commands to run in workflow pods while affected privileged Podman templates lacked hostUsers: false. This issue is fixed in versions 1.0.4, 1.1.4, and 1.2.0-rc.2.

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 2026-08-17 17:14 UTC

CWE

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

Assigner

GitHub_M mitre root

References

12 references

URL	Tags
https://github.com/openchoreo/openchoreo/security…	x_refsource_CONFIRM
https://github.com/openchoreo/openchoreo/pull/4193	x_refsource_MISC
https://github.com/openchoreo/openchoreo/pull/4243	x_refsource_MISC
https://github.com/openchoreo/openchoreo/pull/4277	x_refsource_MISC
https://github.com/openchoreo/openchoreo/pull/4297	x_refsource_MISC
https://github.com/openchoreo/openchoreo/commit/0…	x_refsource_MISC
https://github.com/openchoreo/openchoreo/commit/6…	x_refsource_MISC
https://github.com/openchoreo/openchoreo/commit/b…	x_refsource_MISC
https://github.com/openchoreo/openchoreo/commit/f…	x_refsource_MISC
https://github.com/openchoreo/openchoreo/releases…	x_refsource_MISC
https://github.com/openchoreo/openchoreo/releases…	x_refsource_MISC
https://github.com/openchoreo/openchoreo/releases…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version	CPE status
openchoreo	openchoreo	Affected: < 1.0.4 Affected: >= 1.1.0, < 1.1.4 Affected: >= 1.2.0-rc.1, < 1.2.0-rc.2	guessed

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          "title": "OpenChoreo: Authenticated OS command injection via OpenChoreo Workflow Plane templates enables code execution in privileged pods"
        }
      },
      "cveMetadata": {
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "assignerShortName": "GitHub_M",
        "cveId": "CVE-2026-73667",
        "datePublished": "2026-08-13T21:43:43.895Z",
        "dateReserved": "2026-08-13T14:04:09.606Z",
        "dateUpdated": "2026-08-17T17:18:14.029Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}

FKIE_CVE-2026-73667

Vulnerability from fkie_nvd - Published: 2026-08-13 22:17 - Updated: 2026-09-08 20:56

Severity

8.8 (High) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Summary

References

	URL	Tags
	security-advisories@github.com	https://github.com/openchoreo/openchoreo/commit/017c3c6d8b27c21d11c8c2b43da1846aa7ae73b9
	security-advisories@github.com	https://github.com/openchoreo/openchoreo/commit/65c081ff74618714cb0c82b5d0e0fad2c2cbc46b
	security-advisories@github.com	https://github.com/openchoreo/openchoreo/commit/b274127a4342e5433c5035384cef57478b5b65ed
	security-advisories@github.com	https://github.com/openchoreo/openchoreo/commit/fb2b659b9884eb45fa4f02b9cc7e89718a0276b7
	security-advisories@github.com	https://github.com/openchoreo/openchoreo/pull/4193
	security-advisories@github.com	https://github.com/openchoreo/openchoreo/pull/4243
	security-advisories@github.com	https://github.com/openchoreo/openchoreo/pull/4277
	security-advisories@github.com	https://github.com/openchoreo/openchoreo/pull/4297
	security-advisories@github.com	https://github.com/openchoreo/openchoreo/releases/tag/v1.0.4
	security-advisories@github.com	https://github.com/openchoreo/openchoreo/releases/tag/v1.1.4
	security-advisories@github.com	https://github.com/openchoreo/openchoreo/releases/tag/v1.2.0-rc.2
	security-advisories@github.com	https://github.com/openchoreo/openchoreo/security/advisories/GHSA-2mw5-23gm-pccq

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "openchoreo",
          "vendor": "openchoreo",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.0.4"
            },
            {
              "status": "affected",
              "version": "\u003e= 1.1.0, \u003c 1.1.4"
            },
            {
              "status": "affected",
              "version": "\u003e= 1.2.0-rc.1, \u003c 1.2.0-rc.2"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "OpenChoreo is a complete, open-source developer platform for Kubernetes. Prior to 1.0.4, 1.1.4, and 1.2.0-rc.2, OpenChoreo Workflow Plane templates under samples/getting-started/workflow-templates/ interpolated developer-controlled workflow parameters into shell program text executed through sh -c instead of passing the values through container.env, allowing arbitrary commands to run in workflow pods while affected privileged Podman templates lacked hostUsers: false. This issue is fixed in versions 1.0.4, 1.1.4, and 1.2.0-rc.2."
    }
  ],
  "id": "CVE-2026-73667",
  "lastModified": "2026-09-08T20:56:50.520",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 8.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 5.9,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-73667",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-08-17T17:14:17.168440Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-08-13T22:17:28.580",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/openchoreo/openchoreo/commit/017c3c6d8b27c21d11c8c2b43da1846aa7ae73b9"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/openchoreo/openchoreo/commit/65c081ff74618714cb0c82b5d0e0fad2c2cbc46b"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/openchoreo/openchoreo/commit/b274127a4342e5433c5035384cef57478b5b65ed"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/openchoreo/openchoreo/commit/fb2b659b9884eb45fa4f02b9cc7e89718a0276b7"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/openchoreo/openchoreo/pull/4193"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/openchoreo/openchoreo/pull/4243"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/openchoreo/openchoreo/pull/4277"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/openchoreo/openchoreo/pull/4297"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/openchoreo/openchoreo/releases/tag/v1.0.4"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/openchoreo/openchoreo/releases/tag/v1.1.4"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/openchoreo/openchoreo/releases/tag/v1.2.0-rc.2"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/openchoreo/openchoreo/security/advisories/GHSA-2mw5-23gm-pccq"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-78"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}

GHSA-2MW5-23GM-PCCQ

Vulnerability from github – Published: 2026-09-02 23:45 – Updated: 2026-09-02 23:45

Summary

OpenChoreo: Authenticated OS command injection via OpenChoreo Workflow Plane templates enables code execution in privileged pods

Details

Summary

OpenChoreo Workflow Plane templates were vulnerable to OS command injection because some developer-controlled workflow parameters were interpolated directly into shell program text executed through sh -c.

An authenticated user with permission to configure and trigger an affected workflow could supply crafted parameter values containing shell metacharacters. Because Argo substituted these values directly into the shell script before execution, the values could alter the script and execute arbitrary commands inside the workflow pod.

In affected configurations, some build and publish templates used privileged Podman containers without Kubernetes pod user-namespace isolation. Consequently, injected commands could run as UID 0 inside a privileged container, with UID 0 mapped into the host user namespace. This substantially increased the potential impact of the command-injection vulnerability.

The remediation ensures that workflow parameters are treated as data rather than executable shell syntax. Affected values are now passed through container.env and consumed as quoted shell variables. JSON-derived build environment variables and build arguments are passed as separate argument-vector entries instead of being reconstructed as whitespace-delimited shell strings.

Impact

An authenticated user with permission to trigger an affected workflow could execute arbitrary commands inside the corresponding workflow pod.

Depending on the affected template and its configuration, an attacker could potentially: - Read source code checked out by the workflow. - Read Git credentials, registry credentials, or other secrets mounted into the pod. - Read the pod's Kubernetes service account token. - Access mounted volumes and other build-time data. - etc

Some affected build and publish templates ran Podman using:

securityContext:
  privileged: true

and did not previously enable pod user namespaces.

Without hostUsers: false, UID 0 inside the container is UID 0 in the host user namespace. In combination with privileged mode, this grants the container broad Linux capabilities and removes several normal container isolation restrictions.

This does not mean that every successful command injection automatically results in a container escape or complete node compromise. However, it materially increases the risk. Depending on the container runtime, available devices, mounted paths, kernel configuration, and node environment, an attacker may be able to access host resources or escalate the compromise to the underlying node.

For example, access to a host block device such as /dev/vda1 is only possible when that device is exposed or otherwise visible inside the container. The presence and naming of such devices are environment-specific and should not be assumed across all deployments.

Patches

The fixes have been applied to the 1.0.4, 1.1.4, and 1.2.0-rc.2 releases. The fix prevents OS command injection by removing direct interpolation of developer-controlled Argo parameters into shell scripts executed through sh -c. Affected values are now passed through container environment variables and consumed as quoted shell variables, while JSON-derived build arguments and environment variables are passed as separate argument entries instead of being reconstructed as shell command strings. The patched workflow templates also enable pod user namespaces for containers that still require privileged Podman by setting hostUsers: false. This maps UID 0 inside the pod to a non-root UID on the host when user namespaces are supported by the cluster. Privileged execution has also been removed from workflow templates where it is no longer required.

Users of the sample workflow templates should apply the corrected templates from the corresponding release branch: https://github.com/openchoreo/openchoreo/tree/release-v1.x/samples/getting-started/workflow-templates. Replace release-v1.x with the relevant release branch, such as release-v1.0, release-v1.1, or release-v1.2, and apply the applicable workflow templates to the cluster.

Users with custom workflow templates should also review and update those templates, as upgrading OpenChoreo does not automatically correct independently maintained custom templates containing unsafe shell interpolation.

Workarounds

If you cannot upgrade immediately: - Restrict permission to create, modify, or trigger workflows to trusted users only. - Do not allow untrusted users to control parameters used by checkout, build, publish, or workload-generation templates.

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

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/openchoreo/openchoreo"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.0.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/openchoreo/openchoreo"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "1.1.0"
            },
            {
              "fixed": "1.1.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/openchoreo/openchoreo"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "1.2.0-rc.1"
            },
            {
              "fixed": "1.2.0-rc.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-73667"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-78"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-09-02T23:45:26Z",
    "nvd_published_at": "2026-08-13T22:17:28Z",
    "severity": "HIGH"
  },
  "details": "### Summary\nOpenChoreo Workflow Plane templates were vulnerable to OS command injection because some developer-controlled workflow parameters were interpolated directly into shell program text executed through sh -c.\n\nAn authenticated user with permission to configure and trigger an affected workflow could supply crafted parameter values containing shell metacharacters. Because Argo substituted these values directly into the shell script before execution, the values could alter the script and execute arbitrary commands inside the workflow pod.\n\nIn affected configurations, some build and publish templates used privileged Podman containers without Kubernetes pod user-namespace isolation. Consequently, injected commands could run as UID 0 inside a privileged container, with UID 0 mapped into the host user namespace. This substantially increased the potential impact of the command-injection vulnerability.\n\nThe remediation ensures that workflow parameters are treated as data rather than executable shell syntax. Affected values are now passed through container.env and consumed as quoted shell variables. JSON-derived build environment variables and build arguments are passed as separate argument-vector entries instead of being reconstructed as whitespace-delimited shell strings.\n\n### Impact\nAn authenticated user with permission to trigger an affected workflow could execute arbitrary commands inside the corresponding workflow pod.\n\nDepending on the affected template and its configuration, an attacker could potentially:\n- Read source code checked out by the workflow.\n- Read Git credentials, registry credentials, or other secrets mounted into the pod.\n- Read the pod\u0027s Kubernetes service account token.\n- Access mounted volumes and other build-time data.\n- etc\n\nSome affected build and publish templates ran Podman using:\n\n```\nsecurityContext:\n  privileged: true\n```\n\nand did not previously enable pod user namespaces.\n\nWithout `hostUsers: false`, UID 0 inside the container is UID 0 in the host user namespace. In combination with privileged mode, this grants the container broad Linux capabilities and removes several normal container isolation restrictions.\n\nThis does not mean that every successful command injection automatically results in a container escape or complete node compromise. However, it materially increases the risk. Depending on the container runtime, available devices, mounted paths, kernel configuration, and node environment, an attacker may be able to access host resources or escalate the compromise to the underlying node.\n\nFor example, access to a host block device such as /dev/vda1 is only possible when that device is exposed or otherwise visible inside the container. The presence and naming of such devices are environment-specific and should not be assumed across all deployments.\n\n### Patches\nThe fixes have been applied to the 1.0.4, 1.1.4, and 1.2.0-rc.2 releases. The fix prevents OS command injection by removing direct interpolation of developer-controlled Argo parameters into shell scripts executed through `sh -c`. Affected values are now passed through container environment variables and consumed as quoted shell variables, while JSON-derived build arguments and environment variables are passed as separate argument entries instead of being reconstructed as shell command strings. The patched workflow templates also enable pod user namespaces for containers that still require privileged Podman by setting hostUsers: false. This maps UID 0 inside the pod to a non-root UID on the host when user namespaces are supported by the cluster. Privileged execution has also been removed from workflow templates where it is no longer required.\n\nUsers of the sample workflow templates should apply the corrected templates from the corresponding release branch: `https://github.com/openchoreo/openchoreo/tree/release-v1.x/samples/getting-started/workflow-templates`. Replace release-v1.x with the relevant release branch, such as release-v1.0, release-v1.1, or release-v1.2, and apply the applicable workflow templates to the cluster.\n\nUsers with custom workflow templates should also review and update those templates, as upgrading OpenChoreo does not automatically correct independently maintained custom templates containing unsafe shell interpolation.\n\n### Workarounds\nIf you cannot upgrade immediately:\n- Restrict permission to create, modify, or trigger workflows to trusted users only.\n- Do not allow untrusted users to control parameters used by checkout, build, publish, or workload-generation templates.",
  "id": "GHSA-2mw5-23gm-pccq",
  "modified": "2026-09-02T23:45:26Z",
  "published": "2026-09-02T23:45:26Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/openchoreo/openchoreo/security/advisories/GHSA-2mw5-23gm-pccq"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-73667"
    },
    {
      "type": "WEB",
      "url": "https://github.com/openchoreo/openchoreo/pull/4193"
    },
    {
      "type": "WEB",
      "url": "https://github.com/openchoreo/openchoreo/pull/4243"
    },
    {
      "type": "WEB",
      "url": "https://github.com/openchoreo/openchoreo/pull/4277"
    },
    {
      "type": "WEB",
      "url": "https://github.com/openchoreo/openchoreo/pull/4297"
    },
    {
      "type": "WEB",
      "url": "https://github.com/openchoreo/openchoreo/commit/017c3c6d8b27c21d11c8c2b43da1846aa7ae73b9"
    },
    {
      "type": "WEB",
      "url": "https://github.com/openchoreo/openchoreo/commit/65c081ff74618714cb0c82b5d0e0fad2c2cbc46b"
    },
    {
      "type": "WEB",
      "url": "https://github.com/openchoreo/openchoreo/commit/b274127a4342e5433c5035384cef57478b5b65ed"
    },
    {
      "type": "WEB",
      "url": "https://github.com/openchoreo/openchoreo/commit/fb2b659b9884eb45fa4f02b9cc7e89718a0276b7"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/openchoreo/openchoreo"
    },
    {
      "type": "WEB",
      "url": "https://github.com/openchoreo/openchoreo/releases/tag/v1.0.4"
    },
    {
      "type": "WEB",
      "url": "https://github.com/openchoreo/openchoreo/releases/tag/v1.1.4"
    },
    {
      "type": "WEB",
      "url": "https://github.com/openchoreo/openchoreo/releases/tag/v1.2.0-rc.2"
    }
  ],
  "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": "OpenChoreo: Authenticated OS command injection via OpenChoreo Workflow Plane templates enables code execution in privileged pods"
}

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.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

CVE-2026-73667 (GCVE-0-2026-73667)

FKIE_CVE-2026-73667

GHSA-2MW5-23GM-PCCQ

Summary

Impact

Patches

Workarounds

Tags

Sightings

Nomenclature

Related by attack behaviour