{
  "id": "CVE-2022-21169",
  "sourceIdentifier": "report@snyk.io",
  "published": "2022-09-26T05:15:10.133",
  "lastModified": "2024-02-14T01:17:43.863",
  "vulnStatus": "Analyzed",
  "descriptions": [
    {
      "lang": "en",
      "value": "The package express-xss-sanitizer before 1.1.3 are vulnerable to Prototype Pollution via the allowedTags attribute, allowing the attacker to bypass xss sanitization."
    },
    {
      "lang": "es",
      "value": "El paquete express-xss-sanitizer versiones anteriores a 1.1.3, es vulnerable a una Contaminaci\u00f3n de Prototipos por medio del atributo allowedTags, permitiendo al atacante omitir el saneo de tipo xss."
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "nvd@nist.gov",
        "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
      },
      {
        "source": "report@snyk.io",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "availabilityImpact": "LOW",
          "baseScore": 7.3,
          "baseSeverity": "HIGH"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.4
      }
    ]
  },
  "weaknesses": [
    {
      "source": "nvd@nist.gov",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-1321"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:express_xss_sanitizer_project:express_xss_sanitizer:*:*:*:*:*:node.js:*:*",
              "versionEndExcluding": "1.1.3",
              "matchCriteriaId": "5A82E346-B772-4081-BD07-2911862E9945"
            }
          ]
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/AhmedAdelFahim/express-xss-sanitizer/commit/3bf8aaaf4dbb1c209dcb8d87a82711a54c1ab39a",
      "source": "report@snyk.io",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ]
    },
    {
      "url": "https://github.com/AhmedAdelFahim/express-xss-sanitizer/issues/4",
      "source": "report@snyk.io",
      "tags": [
        "Exploit",
        "Issue Tracking",
        "Third Party Advisory"
      ]
    },
    {
      "url": "https://runkit.com/embed/w306l6zfm7tu",
      "source": "report@snyk.io",
      "tags": [
        "Patch",
        "Third Party Advisory",
        "URL Repurposed"
      ]
    },
    {
      "url": "https://security.snyk.io/vuln/SNYK-JS-EXPRESSXSSSANITIZER-3027443",
      "source": "report@snyk.io",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ]
    }
  ]
}