FKIE_CVE-2026-73840

Vulnerability from fkie_nvd - Published: 2026-08-13 22:17 - Updated: 2026-08-14 17:20
Severity
5.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Summary
OpenChoreo is a complete, open-source developer platform for Kubernetes. Prior to 1.0.3, 1.1.3, and 1.2.0-rc.2, the POST /api/v1alpha1/autobuild endpoint in internal/openchoreo-api/api/handlers/webhook_handler.go selected a webhook provider from caller-controlled X-Event-Key, accepted Bitbucket requests without HMAC-SHA256 in X-Hub-Signature or a configured bitbucket-secret, and allowed unauthenticated build triggers for components matched by repository URL and branch, including cross-provider triggers using attacker-supplied commit SHAs. This issue is fixed in versions 1.0.3, 1.1.3, and 1.2.0-rc.2.
References
security-advisories@github.comhttps://github.com/openchoreo/openchoreo/commit/268efd9b762a3f4f72b55d9c1b13dfc55122127b
security-advisories@github.comhttps://github.com/openchoreo/openchoreo/commit/8af4a3fc8725fc2d8a9de9611e77278a5c48f978
security-advisories@github.comhttps://github.com/openchoreo/openchoreo/commit/f540553db7143141b73bb37fae02102e6f082a34
security-advisories@github.comhttps://github.com/openchoreo/openchoreo/pull/4239
security-advisories@github.comhttps://github.com/openchoreo/openchoreo/pull/4252
security-advisories@github.comhttps://github.com/openchoreo/openchoreo/pull/4253
security-advisories@github.comhttps://github.com/openchoreo/openchoreo/releases/tag/v1.0.3
security-advisories@github.comhttps://github.com/openchoreo/openchoreo/releases/tag/v1.1.3
security-advisories@github.comhttps://github.com/openchoreo/openchoreo/releases/tag/v1.2.0-rc.2
security-advisories@github.comhttps://github.com/openchoreo/openchoreo/security/advisories/GHSA-c5f6-2rm9-2w8g
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "openchoreo",
          "vendor": "openchoreo",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.0.3"
            },
            {
              "status": "affected",
              "version": "\u003e= 1.1.0, \u003c 1.1.3"
            },
            {
              "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 1.0.3, 1.1.3, and 1.2.0-rc.2, the POST /api/v1alpha1/autobuild endpoint in internal/openchoreo-api/api/handlers/webhook_handler.go selected a webhook provider from caller-controlled X-Event-Key, accepted Bitbucket requests without HMAC-SHA256 in X-Hub-Signature or a configured bitbucket-secret, and allowed unauthenticated build triggers for components matched by repository URL and branch, including cross-provider triggers using attacker-supplied commit SHAs. This issue is fixed in versions 1.0.3, 1.1.3, and 1.2.0-rc.2."
    }
  ],
  "id": "CVE-2026-73840",
  "lastModified": "2026-08-14T17:20:36.480",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "LOW",
          "baseScore": 5.3,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 1.4,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-73840",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-08-14T16:25:46.438980Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-08-13T22:17:28.737",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/openchoreo/openchoreo/commit/268efd9b762a3f4f72b55d9c1b13dfc55122127b"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/openchoreo/openchoreo/commit/8af4a3fc8725fc2d8a9de9611e77278a5c48f978"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/openchoreo/openchoreo/commit/f540553db7143141b73bb37fae02102e6f082a34"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/openchoreo/openchoreo/pull/4239"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/openchoreo/openchoreo/pull/4252"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/openchoreo/openchoreo/pull/4253"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/openchoreo/openchoreo/releases/tag/v1.0.3"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/openchoreo/openchoreo/releases/tag/v1.1.3"
    },
    {
      "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-c5f6-2rm9-2w8g"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Received",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-287"
        },
        {
          "lang": "en",
          "value": "CWE-290"
        },
        {
          "lang": "en",
          "value": "CWE-345"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}



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Sightings

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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.
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  • 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.


Detection rules are retrieved from Rulezet.