Vulnerability-Lookup

CVE-2026-73843 (GCVE-0-2026-73843)

Vulnerability from cvelistv5 – Published: 2026-08-13 22:02 – Updated: 2026-08-14 18:06

Title

OpenChoreo: Unauthenticated access to data-plane operations via OpenChoreo cluster-gateway management APIs

Summary

OpenChoreo is a complete, open-source developer platform for Kubernetes. Prior to 1.0.2 and 1.1.2, internal/cluster-gateway/server.go served caller-facing management APIs on the externally reachable agent listener without authentication, allowing network-reachable attackers to invoke /api/proxy/ and /api/exec/ operations, proxy the data-plane Kubernetes API, and execute commands in workload pods in multi-cluster deployments. This issue is fixed in versions 1.0.2 and 1.1.2.

Severity

9.6 (Critical)


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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-14 17:53 UTC

CWE

CWE-306 - Missing Authentication for Critical Function
CWE-668 - Exposure of Resource to Wrong Sphere
CWE-862 - Missing Authorization

Assigner

GitHub_M mitre root Scorecard

References

7 references

URL	Tags
https://github.com/openchoreo/openchoreo/security…	x_refsource_CONFIRM
https://github.com/openchoreo/openchoreo/pull/4122	x_refsource_MISC
https://github.com/openchoreo/openchoreo/commit/0…	x_refsource_MISC
https://github.com/openchoreo/openchoreo/commit/0…	x_refsource_MISC
https://github.com/openchoreo/openchoreo/commit/b…	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
openchoreo	openchoreo	Affected: < 1.0.2 Affected: >= 1.1.0, < 1.1.2

Show details on NVD website

JSON

To clipboard

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EUVD-2026-352821

European Vulnerability Database identifier assigned by ENISA

Reserved

2026-10-02 08:21

Assigner

ENISA

Alias of

a CVE record, shown under related vulnerabilities. This identifier carries no description, severity or references of its own: they belong to that CVE.

JSON

To clipboard

{
  "assigner": "ENISA",
  "date_reserved": "2026-10-02T08:21:32.282855+00:00",
  "id": "EUVD-2026-352821"
}

FKIE_CVE-2026-73843

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

Severity

9.6 (Critical) - CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Summary

References

	URL	Tags
	security-advisories@github.com	https://github.com/openchoreo/openchoreo/commit/047d80ddc63b4b4b9dd67044d5cffcdbd77685ce
	security-advisories@github.com	https://github.com/openchoreo/openchoreo/commit/0aa0ffe1623bd8eb4235cb2a5854336695953c3a
	security-advisories@github.com	https://github.com/openchoreo/openchoreo/commit/b42eeb0f5dce95195a9781d7c5a1fe9e38f5da8f
	security-advisories@github.com	https://github.com/openchoreo/openchoreo/pull/4122
	security-advisories@github.com	https://github.com/openchoreo/openchoreo/releases/tag/v1.0.2
	security-advisories@github.com	https://github.com/openchoreo/openchoreo/releases/tag/v1.1.2
	security-advisories@github.com	https://github.com/openchoreo/openchoreo/security/advisories/GHSA-qh9r-j7rp-4x2m

Impacted products

	Vendor	Product	Version

JSON

To clipboard

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          "vendor": "openchoreo",
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    }
  ],
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          "options": [
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              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-08-14T17:53:55.078114Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-08-13T22:17:29.193",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/openchoreo/openchoreo/commit/047d80ddc63b4b4b9dd67044d5cffcdbd77685ce"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/openchoreo/openchoreo/commit/0aa0ffe1623bd8eb4235cb2a5854336695953c3a"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/openchoreo/openchoreo/commit/b42eeb0f5dce95195a9781d7c5a1fe9e38f5da8f"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/openchoreo/openchoreo/pull/4122"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/openchoreo/openchoreo/releases/tag/v1.0.2"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/openchoreo/openchoreo/releases/tag/v1.1.2"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/openchoreo/openchoreo/security/advisories/GHSA-qh9r-j7rp-4x2m"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-306"
        },
        {
          "lang": "en",
          "value": "CWE-668"
        },
        {
          "lang": "en",
          "value": "CWE-862"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}

GHSA-QH9R-J7RP-4X2M

Vulnerability from github – Published: 2026-09-02 23:43 – Updated: 2026-09-02 23:43

Summary

OpenChoreo: Unauthenticated access to data-plane operations via OpenChoreo cluster-gateway management APIs

Details

Summary

The OpenChoreo control-plane cluster-gateway served its caller-facing management APIs on the same network listener that accepts data-plane agent connections. In the multi-cluster topology that listener is published outside the cluster, and the management APIs did not authenticate the calling client. A party able to reach the listener could therefore invoke privileged data-plane operations without authenticating and without passing through the OpenChoreo API server's authorization.

Impact

An attacker who can reach the externally published cluster-gateway endpoint can perform data-plane operations normally restricted to the OpenChoreo API server and gated by its authorization — including proxying the data plane's Kubernetes API and executing commands inside workload pods. This can result in full compromise of workloads on the affected data plane (disclosure, tampering, and denial of service).

The exposure applies to the multi-cluster / remote data-plane topology, where the cluster-gateway is published outside the cluster so remote data-plane agents can connect. That same externally reachable listener also served the caller-facing management APIs, which did not authenticate the caller. Deployments that do not publish the cluster-gateway outside the cluster are not affected.

Patches

Fixed in 1.0.2, 1.1.2, and 1.2.0. The fix moves the caller-facing management APIs onto a separate internal listener that is not published outside the cluster, leaving only the agent-connection endpoint on the externally reachable listener. Upgrading is non-disruptive — no data-plane agent or configuration changes are required beyond the standard chart upgrade. Upgrade path: 1.1.x → 1.1.2, 1.0.x and earlier → 1.0.2, 1.2 line → 1.2.0.

Workarounds

If you cannot upgrade immediately: - If you do run remote data planes, restrict reachability of the external gateway endpoint to known data-plane source addresses only (firewall / gateway-level allowlisting).

Severity

9.6 (Critical)


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

Show details on source website

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{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/openchoreo/openchoreo"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.0.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/openchoreo/openchoreo"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "1.1.0"
            },
            {
              "fixed": "1.1.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-73843"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-306",
      "CWE-668",
      "CWE-862"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-09-02T23:43:55Z",
    "nvd_published_at": "2026-08-13T22:17:29Z",
    "severity": "CRITICAL"
  },
  "details": "### Summary\nThe OpenChoreo control-plane **cluster-gateway** served its caller-facing management APIs on the same network listener that accepts data-plane agent connections. In the multi-cluster topology that listener is published outside the cluster, and the management APIs did not authenticate the calling client. A party able to reach the listener could therefore invoke privileged data-plane operations without authenticating and without passing through the OpenChoreo API server\u0027s authorization.\n\n### Impact\nAn attacker who can reach the externally published cluster-gateway endpoint can perform data-plane operations normally restricted to the OpenChoreo API server and gated by its authorization \u2014 including proxying the data plane\u0027s Kubernetes API and executing commands inside workload pods. This can result in full compromise of workloads on the affected data plane (disclosure, tampering, and denial of service).\n\nThe exposure applies to the multi-cluster / remote data-plane topology, where the cluster-gateway is published outside the cluster so remote data-plane agents can connect. That same externally reachable listener also served the caller-facing management APIs, which did not authenticate the caller. Deployments that do not publish the cluster-gateway outside the cluster are not affected.\n\n### Patches\nFixed in **1.0.2**, **1.1.2**, and **1.2.0**. The fix moves the caller-facing management APIs onto a separate internal listener that is not published outside the cluster, leaving only the agent-connection endpoint on the externally reachable listener. Upgrading is non-disruptive \u2014 no data-plane agent or configuration changes are required beyond the standard chart upgrade. Upgrade path: 1.1.x \u2192 1.1.2, 1.0.x and earlier \u2192 1.0.2, 1.2 line \u2192 1.2.0.\n\n### Workarounds\nIf you cannot upgrade immediately:\n- If you do run remote data planes, restrict reachability of the external gateway endpoint to known data-plane source addresses only (firewall / gateway-level allowlisting).",
  "id": "GHSA-qh9r-j7rp-4x2m",
  "modified": "2026-09-02T23:43:55Z",
  "published": "2026-09-02T23:43:55Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/openchoreo/openchoreo/security/advisories/GHSA-qh9r-j7rp-4x2m"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-73843"
    },
    {
      "type": "WEB",
      "url": "https://github.com/openchoreo/openchoreo/pull/4122"
    },
    {
      "type": "WEB",
      "url": "https://github.com/openchoreo/openchoreo/commit/047d80ddc63b4b4b9dd67044d5cffcdbd77685ce"
    },
    {
      "type": "WEB",
      "url": "https://github.com/openchoreo/openchoreo/commit/0aa0ffe1623bd8eb4235cb2a5854336695953c3a"
    },
    {
      "type": "WEB",
      "url": "https://github.com/openchoreo/openchoreo/commit/b42eeb0f5dce95195a9781d7c5a1fe9e38f5da8f"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/openchoreo/openchoreo"
    },
    {
      "type": "WEB",
      "url": "https://github.com/openchoreo/openchoreo/releases/tag/v1.0.2"
    },
    {
      "type": "WEB",
      "url": "https://github.com/openchoreo/openchoreo/releases/tag/v1.1.2"
    },
    {
      "type": "WEB",
      "url": "https://github.com/openchoreo/openchoreo/releases/tag/v1.2.0"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "OpenChoreo: Unauthenticated access to data-plane operations via OpenChoreo cluster-gateway management APIs"
}

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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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-2026-73843 (GCVE-0-2026-73843)

EUVD-2026-352821

FKIE_CVE-2026-73843

GHSA-QH9R-J7RP-4X2M

Summary

Impact

Patches

Workarounds

Tags

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