{
  "id": "CVE-2021-44163",
  "sourceIdentifier": "twcert@cert.org.tw",
  "published": "2021-12-20T03:15:06.770",
  "lastModified": "2021-12-27T17:02:17.867",
  "vulnStatus": "Analyzed",
  "descriptions": [
    {
      "lang": "en",
      "value": "Chain Sea ai chatbot backend has improper filtering of special characters in URL parameters, which allows a remote attacker to perform JavaScript injection for XSS (reflected Cross-site scripting) attack without authentication."
    },
    {
      "lang": "es",
      "value": "El backend del chatbot Chain Sea ai, presenta un filtrado inapropiado de caracteres especiales en los par\u00e1metros de la URL, que permite a un atacante remoto llevar a cabo una inyecci\u00f3n de JavaScript para un ataque de tipo XSS (Cross-site scripting reflejado) sin autenticaci\u00f3n"
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "twcert@cert.org.tw",
        "type": "Primary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "REQUIRED",
          "scope": "CHANGED",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "availabilityImpact": "NONE",
          "baseScore": 6.1,
          "baseSeverity": "MEDIUM"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 2.7
      }
    ],
    "cvssMetricV2": [
      {
        "source": "nvd@nist.gov",
        "type": "Primary",
        "cvssData": {
          "version": "2.0",
          "vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:N",
          "accessVector": "NETWORK",
          "accessComplexity": "MEDIUM",
          "authentication": "NONE",
          "confidentialityImpact": "NONE",
          "integrityImpact": "PARTIAL",
          "availabilityImpact": "NONE",
          "baseScore": 4.3
        },
        "baseSeverity": "MEDIUM",
        "exploitabilityScore": 8.6,
        "impactScore": 2.9,
        "acInsufInfo": false,
        "obtainAllPrivilege": false,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": true
      }
    ]
  },
  "weaknesses": [
    {
      "source": "twcert@cert.org.tw",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:chinasea:qb_smart_service_robot:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "50A93B76-712F-4EF7-8E4B-22601324FE89"
            }
          ]
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://www.twcert.org.tw/tw/cp-132-5399-03b81-1.html",
      "source": "twcert@cert.org.tw",
      "tags": [
        "Third Party Advisory"
      ]
    }
  ]
}