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CVE-2019-8788

Status: ModifiedHigh (7.5)—

An issue existed in the parsing of URLs. This issue was addressed with improved input validation. This issue is fixed in iOS 13.2 and iPadOS 13.2, macOS Catalina 10.15.1. Improper URL processing may lead to data exfiltration.

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (3)

Apple — IpadosApple — Iphone OSApple — MAC OS X

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2019-8788",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:N",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
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    "cvssMetricV31": [
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          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 3.9
      }
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  },
  "affected": [
    {
      "source": "product-security@apple.com",
      "affectedData": [
        {
          "vendor": "Apple",
          "product": "iOS",
          "versions": [
            {
              "status": "affected",
              "version": "unspecified",
              "lessThan": "iOS 13.2 and iPadOS 13.2",
              "versionType": "custom"
            }
          ]
        },
        {
          "vendor": "Apple",
          "product": "macOS",
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  ],
  "published": "2019-12-18T18:15:41.413",
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    {
      "url": "https://support.apple.com/HT210721",
      "tags": [
        "Vendor Advisory"
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      "source": "product-security@apple.com"
    },
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      "url": "https://support.apple.com/HT210722",
      "tags": [
        "Vendor Advisory"
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      "source": "product-security@apple.com"
    },
    {
      "url": "https://support.apple.com/HT210721",
      "tags": [
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://support.apple.com/HT210722",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
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      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-20"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "An issue existed in the parsing of URLs. This issue was addressed with improved input validation. This issue is fixed in iOS 13.2 and iPadOS 13.2, macOS Catalina 10.15.1. Improper URL processing may lead to data exfiltration."
    },
    {
      "lang": "es",
      "value": "Se presentó un problema en el análisis de las URL. Este problema fue abordado con una comprobación de entrada mejorada. Este problema es corregido en iOS versión 13.2 y iPadOS versión 13.2, macOS Catalina versión 10.15.1. El procesamiento incorrecto de URL puede conllevar a la exfiltración de datos."
    }
  ],
  "lastModified": "2026-06-17T02:42:37.077",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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              "matchCriteriaId": "AD59FD8B-5C11-469A-91E8-B3EB904AB1EF",
              "versionEndExcluding": "13.2"
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  "sourceIdentifier": "product-security@apple.com"
}