{
  "affected": [
    {
      "affectedData": [
        {
          "product": "kurrier",
          "vendor": "kurrier-org",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.2.4"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Kurrier is a modern, self-hosted workspace for email, calendar, contacts, and storage. Prior to 1.2.4, Kurrier API endpoints for listing and retrieving webhook and identity resources did not enforce ownership checks for authenticated API requests. An attacker with a valid API key could use another account\u0027s identifiers to read and enumerate webhook and identity resources belonging to that account through apps/worker/server/routes/api/kurrier/webhooks/[id].get.ts, apps/worker/server/routes/api/kurrier/webhooks/index.get.ts, apps/worker/server/routes/api/kurrier/identities/[id].get.ts, and apps/worker/server/routes/api/kurrier/identities/index.get.ts. Anonymous requests and invalid API keys were rejected, and cross-user modification operations were blocked, but affected GET and list operations could expose another user\u0027s resource metadata. This issue is fixed in version 1.2.4."
    },
    {
      "lang": "es",
      "value": "Kurrier es un espacio de trabajo moderno y autoalojado para correo electr\u00f3nico, calendario, contactos y almacenamiento. Antes de la versi\u00f3n 1.2.4, los endpoints de la API de Kurrier para listar y recuperar recursos de webhook e identidad no aplicaban comprobaciones de propiedad para solicitudes de API autenticadas. Un atacante con una clave de API v\u00e1lida podr\u00eda usar los identificadores de otra cuenta para leer y enumerar recursos de webhook e identidad pertenecientes a esa cuenta a trav\u00e9s de apps/worker/server/routes/api/kurrier/webhooks/[id].get.ts, apps/worker/server/routes/api/kurrier/webhooks/index.get.ts, apps/worker/server/routes/api/kurrier/identities/[id].get.ts, y apps/worker/server/routes/api/kurrier/identities/index.get.ts. Las solicitudes an\u00f3nimas y las claves de API inv\u00e1lidas eran rechazadas, y las operaciones de modificaci\u00f3n entre usuarios estaban bloqueadas, pero las operaciones GET y de listado afectadas podr\u00edan exponer los metadatos de recursos de otro usuario. Este problema est\u00e1 solucionado en la versi\u00f3n 1.2.4."
    }
  ],
  "id": "CVE-2026-50167",
  "lastModified": "2026-10-22T22:10:00.250",
  "metrics": {
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 5.3,
          "baseSeverity": "MEDIUM",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "LOW",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "userInteraction": "NONE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
          "version": "4.0",
          "vulnAvailabilityImpact": "NONE",
          "vulnConfidentialityImpact": "LOW",
          "vulnIntegrityImpact": "NONE",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-50167",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-08-19T18:04:09.506721Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-08-18T18:17:53.533",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/kurrier-org/kurrier/commit/22fad36fb1bc79e3038184ddd485fb235217475c"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/kurrier-org/kurrier/pull/446"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/kurrier-org/kurrier/releases/tag/v1.2.4"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/kurrier-org/kurrier/security/advisories/GHSA-f7h3-f5vh-3764"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-639"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}