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CVE-2023-50455

Estado: ModificadaAlta (7.5)—

An issue was discovered in Zammad before 6.2.0. Due to lack of rate limiting in the "email address verification" feature, an attacker could send many requests for a known address to cause Denial Of Service (generation of many emails, which would also spam the victim).

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

Zammad — Zammad

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2023-50455",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2023-50455",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2024-08-28T15:19:58.637243Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.5,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2023-12-10T19:15:07.580",
  "references": [
    {
      "url": "https://zammad.com/en/advisories/zaa-2023-06",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "https://zammad.com/en/advisories/zaa-2023-06",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-770"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "An issue was discovered in Zammad before 6.2.0. Due to lack of rate limiting in the \"email address verification\" feature, an attacker could send many requests for a known address to cause Denial Of Service (generation of many emails, which would also spam the victim)."
    },
    {
      "lang": "es",
      "value": "Se descubrió un problema en Zammad antes de la versión 6.2.0. Debido a la falta de limitación de velocidad en la función \"verificación de dirección de correo electrónico\", un atacante podría enviar muchas solicitudes a una dirección conocida para provocar una denegación de servicio (generación de muchos correos electrónicos, que también enviarían spam a la víctima)."
    }
  ],
  "lastModified": "2026-06-17T06:39:39.947",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:zammad:zammad:6.1.0:-:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "A246CC7D-8B52-43CC-A4F6-7E6C63D56740"
            },
            {
              "criteria": "cpe:2.3:a:zammad:zammad:6.1.0:alpha:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "226C3449-B353-4B93-AC0E-F9D6367FC962"
            },
            {
              "criteria": "cpe:2.3:a:zammad:zammad:6.2.0:alpha:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "98188727-1BBE-4691-8968-5E7047F19793"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "cve@mitre.org"
}