{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "misp",
          "vendor": "misp",
          "versions": [
            {
              "lessThanOrEqual": "2.5.",
              "status": "affected"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Maxime ESCOURBIAC from Michelin CERT"
        },
        {
          "lang": "en",
          "type": "remediation developer",
          "value": "Sami Mokaddem"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "A flaw in the \u003ccode\u003eadmin_email()\u003c/code\u003e action allowed a non\u2013site-admin user to submit the contact/email form in a way that bypassed intended organisation restrictions. The server-side logic did not sufficiently verify that the recipient organisation provided in the request was one the user was authorized to target. As a result, an authenticated user could potentially send emails to users outside their own organisation by manipulating the recipient organisation selection (e.g., by tampering with request parameters)."
            }
          ],
          "value": "A flaw in the admin_email() action allowed a non\u2013site-admin user to submit the contact/email form in a way that bypassed intended organisation restrictions. The server-side logic did not sufficiently verify that the recipient organisation provided in the request was one the user was authorized to target. As a result, an authenticated user could potentially send emails to users outside their own organisation by manipulating the recipient organisation selection (e.g., by tampering with request parameters)."
        }
      ],
      "impacts": [
        {
          "descriptions": [
            {
              "lang": "en"
            }
          ]
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "privilegesRequired": "NONE",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "HIGH",
            "subConfidentialityImpact": "HIGH",
            "subIntegrityImpact": "HIGH",
            "userInteraction": "PASSIVE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H",
            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
            "vulnConfidentialityImpact": "NONE",
            "vulnIntegrityImpact": "NONE",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "lang": "en"
            }
          ]
        }
      ],
      "providerMetadata": {
        "orgId": "00000000-0000-4000-9000-000000000000"
      },
      "references": [
        {
          "url": "https://github.com/MISP/MISP/commit/c7c11678dcb4f7040d3dab1f7af6b011fc3fd568"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "Improper access control in MISP user contact form allows cross-organisation email targeting",
      "x_generator": {
        "engine": "Vulnogram 0.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "00000000-0000-4000-9000-000000000000",
    "datePublished": "2026-02-27T13:25:32.632362Z",
    "dateUpdated": "2026-02-27T13:25:32.632362Z",
    "requesterUserId": "00000000-0000-4000-9000-000000000000",
    "serial": 1,
    "state": "PUBLISHED",
    "vulnId": "GCVE-1-2026-0018",
    "vulnerabilitylookup_history": [
      [
        "alexandre.dulaunoy@circl.lu",
        "2026-02-27T13:25:32.632362Z"
      ]
    ]
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}