GCVE Workshop - 22 September 2026 (14:00-18:00), Luxembourg Before The Vulnopticon Conference - Registration

CVE-2026-20691 (GCVE-0-2026-20691)

Vulnerability from cvelistv5 – Published: 2026-03-25 00:35 – Updated: 2026-04-02 18:27
VLAI
Summary
An authorization issue was addressed with improved state management. This issue is fixed in Safari 26.4, iOS 26.4 and iPadOS 26.4, macOS Tahoe 26.4, visionOS 26.4, watchOS 26.4. A maliciously crafted webpage may be able to fingerprint the user.
Severity
4.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-25 15:08 UTC
CWE
  • A maliciously crafted webpage may be able to fingerprint the user
  • CWE-497 - Exposure of Sensitive System Information to an Unauthorized Control Sphere
Assigner
References
Impacted products
Vendor Product Version CPE status
Apple Safari Affected: 0 , < 26.4 (custom)
guessed Create a notification for this product.
Apple iOS and iPadOS Affected: 0 , < 26.4 (custom)
guessed Create a notification for this product.
Apple macOS Affected: 0 , < 26.4 (custom)
guessed Create a notification for this product.
Apple visionOS Affected: 0 , < 26.4 (custom)
guessed Create a notification for this product.
Apple watchOS Affected: 0 , < 26.4 (custom)
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "NONE",
              "baseScore": 4.3,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "LOW",
              "integrityImpact": "NONE",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "REQUIRED",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2026-20691",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-03-25T15:08:58.557849Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-497",
                "description": "CWE-497 Exposure of Sensitive System Information to an Unauthorized Control Sphere",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-03-25T15:11:57.221Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "Safari",
          "vendor": "Apple",
          "versions": [
            {
              "lessThan": "26.4",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        },
        {
          "product": "iOS and iPadOS",
          "vendor": "Apple",
          "versions": [
            {
              "lessThan": "26.4",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        },
        {
          "product": "macOS",
          "vendor": "Apple",
          "versions": [
            {
              "lessThan": "26.4",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        },
        {
          "product": "visionOS",
          "vendor": "Apple",
          "versions": [
            {
              "lessThan": "26.4",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        },
        {
          "product": "watchOS",
          "vendor": "Apple",
          "versions": [
            {
              "lessThan": "26.4",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "An authorization issue was addressed with improved state management. This issue is fixed in Safari 26.4, iOS 26.4 and iPadOS 26.4, macOS Tahoe 26.4, visionOS 26.4, watchOS 26.4. A maliciously crafted webpage may be able to fingerprint the user."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "A maliciously crafted webpage may be able to fingerprint the user",
              "lang": "en"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-04-02T18:27:20.744Z",
        "orgId": "286789f9-fbc2-4510-9f9a-43facdede74c",
        "shortName": "apple"
      },
      "references": [
        {
          "url": "https://support.apple.com/en-us/126792"
        },
        {
          "url": "https://support.apple.com/en-us/126794"
        },
        {
          "url": "https://support.apple.com/en-us/126798"
        },
        {
          "url": "https://support.apple.com/en-us/126799"
        },
        {
          "url": "https://support.apple.com/en-us/126800"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "286789f9-fbc2-4510-9f9a-43facdede74c",
    "assignerShortName": "apple",
    "cveId": "CVE-2026-20691",
    "datePublished": "2026-03-25T00:35:42.624Z",
    "dateReserved": "2025-11-11T14:43:07.876Z",
    "dateUpdated": "2026-04-02T18:27:20.744Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-20691",
      "date": "2026-09-10",
      "epss": "0.00276",
      "percentile": "0.19905"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-20691\",\"sourceIdentifier\":\"product-security@apple.com\",\"published\":\"2026-03-25T01:17:05.910\",\"lastModified\":\"2026-06-17T10:17:42.163\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"An authorization issue was addressed with improved state management. This issue is fixed in Safari 26.4, iOS 26.4 and iPadOS 26.4, macOS Tahoe 26.4, visionOS 26.4, watchOS 26.4. A maliciously crafted webpage may be able to fingerprint the user.\"},{\"lang\":\"es\",\"value\":\"Se abord\u00f3 un problema de autorizaci\u00f3n con una gesti\u00f3n de estado mejorada. Este problema est\u00e1 solucionado en Safari 26.4, iOS 26.4 y iPadOS 26.4, macOS Tahoe 26.4, visionOS 26.4, watchOS 26.4. Una p\u00e1gina web creada con fines maliciosos podr\u00eda ser capaz de identificar al usuario mediante huella digital.\"}],\"affected\":[{\"source\":\"product-security@apple.com\",\"affectedData\":[{\"vendor\":\"Apple\",\"product\":\"Safari\",\"versions\":[{\"version\":\"0\",\"lessThan\":\"26.4\",\"versionType\":\"custom\",\"status\":\"affected\"}]},{\"vendor\":\"Apple\",\"product\":\"iOS and iPadOS\",\"versions\":[{\"version\":\"0\",\"lessThan\":\"26.4\",\"versionType\":\"custom\",\"status\":\"affected\"}]},{\"vendor\":\"Apple\",\"product\":\"macOS\",\"versions\":[{\"version\":\"0\",\"lessThan\":\"26.4\",\"versionType\":\"custom\",\"status\":\"affected\"}]},{\"vendor\":\"Apple\",\"product\":\"visionOS\",\"versions\":[{\"version\":\"0\",\"lessThan\":\"26.4\",\"versionType\":\"custom\",\"status\":\"affected\"}]},{\"vendor\":\"Apple\",\"product\":\"watchOS\",\"versions\":[{\"version\":\"0\",\"lessThan\":\"26.4\",\"versionType\":\"custom\",\"status\":\"affected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N\",\"baseScore\":4.3,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"REQUIRED\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"LOW\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":2.8,\"impactScore\":1.4}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2026-03-25T15:08:58.557849Z\",\"id\":\"CVE-2026-20691\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"partial\"}],\"role\":\"CISA Coordinator\",\"version\":\"2.0.3\"}}]},\"weaknesses\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-497\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"26.4\",\"matchCriteriaId\":\"993386B4-0570-414F-B4A6-3E65F5704903\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"26.4\",\"matchCriteriaId\":\"F813DB63-2B55-4E0B-9073-5465C65F69D6\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"26.4\",\"matchCriteriaId\":\"01612D13-BE5B-43F8-B53E-5BF57F2A5B0C\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"26.0\",\"versionEndExcluding\":\"26.4\",\"matchCriteriaId\":\"6CF848CD-25D4-4371-BEF3-1ACCE47AD81F\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:apple:visionos:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"26.4\",\"matchCriteriaId\":\"113B9705-BFF0-4357-B1AB-F57052F32361\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"26.4\",\"matchCriteriaId\":\"F6EAF0A5-7CFF-4EF6-9BC7-DB25B213F753\"}]}]}],\"references\":[{\"url\":\"https://support.apple.com/en-us/126792\",\"source\":\"product-security@apple.com\",\"tags\":[\"Release Notes\",\"Vendor Advisory\"]},{\"url\":\"https://support.apple.com/en-us/126794\",\"source\":\"product-security@apple.com\",\"tags\":[\"Release Notes\",\"Vendor Advisory\"]},{\"url\":\"https://support.apple.com/en-us/126798\",\"source\":\"product-security@apple.com\",\"tags\":[\"Release Notes\",\"Vendor Advisory\"]},{\"url\":\"https://support.apple.com/en-us/126799\",\"source\":\"product-security@apple.com\",\"tags\":[\"Release Notes\",\"Vendor Advisory\"]},{\"url\":\"https://support.apple.com/en-us/126800\",\"source\":\"product-security@apple.com\",\"tags\":[\"Release Notes\",\"Vendor Advisory\"]}]}}",
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-06-28T11:28:27+00:00",
      "cve": "CVE-2026-20691",
      "id": "CVE-2026-20691",
      "initial_release_date": "2026-03-28T20:00:00+00:00",
      "product_status:fixed": "509",
      "product_status:known_affected": "4",
      "product_status:known_not_affected": "5",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "webkitgtk: A maliciously crafted webpage may be able to fingerprint the user",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-20691.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-07-15T05:35:32Z",
      "cve": "CVE-2026-20691",
      "id": "CVE-2026-20691",
      "initial_release_date": "2026-03-31T23:28:29Z",
      "product_status:known_affected": "122",
      "product_status:recommended": "311",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-20691",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-20691.json",
      "version": "10"
    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 4.3, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N\", \"integrityImpact\": \"NONE\", \"userInteraction\": \"REQUIRED\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"NONE\", \"privilegesRequired\": \"NONE\", \"confidentialityImpact\": \"LOW\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-20691\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-03-25T15:08:58.557849Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-497\", \"description\": \"CWE-497 Exposure of Sensitive System Information to an Unauthorized Control Sphere\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-03-25T15:08:46.552Z\"}}], \"cna\": {\"affected\": [{\"vendor\": \"Apple\", \"product\": \"Safari\", \"versions\": [{\"status\": \"affected\", \"version\": \"0\", \"lessThan\": \"26.4\", \"versionType\": \"custom\"}]}, {\"vendor\": \"Apple\", \"product\": \"iOS and iPadOS\", \"versions\": [{\"status\": \"affected\", \"version\": \"0\", \"lessThan\": \"26.4\", \"versionType\": \"custom\"}]}, {\"vendor\": \"Apple\", \"product\": \"macOS\", \"versions\": [{\"status\": \"affected\", \"version\": \"0\", \"lessThan\": \"26.4\", \"versionType\": \"custom\"}]}, {\"vendor\": \"Apple\", \"product\": \"visionOS\", \"versions\": [{\"status\": \"affected\", \"version\": \"0\", \"lessThan\": \"26.4\", \"versionType\": \"custom\"}]}, {\"vendor\": \"Apple\", \"product\": \"watchOS\", \"versions\": [{\"status\": \"affected\", \"version\": \"0\", \"lessThan\": \"26.4\", \"versionType\": \"custom\"}]}], \"references\": [{\"url\": \"https://support.apple.com/en-us/126792\"}, {\"url\": \"https://support.apple.com/en-us/126794\"}, {\"url\": \"https://support.apple.com/en-us/126798\"}, {\"url\": \"https://support.apple.com/en-us/126799\"}, {\"url\": \"https://support.apple.com/en-us/126800\"}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"An authorization issue was addressed with improved state management. This issue is fixed in Safari 26.4, iOS 26.4 and iPadOS 26.4, macOS Tahoe 26.4, visionOS 26.4, watchOS 26.4. A maliciously crafted webpage may be able to fingerprint the user.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"description\": \"A maliciously crafted webpage may be able to fingerprint the user\"}]}], \"providerMetadata\": {\"orgId\": \"286789f9-fbc2-4510-9f9a-43facdede74c\", \"shortName\": \"apple\", \"dateUpdated\": \"2026-03-25T00:35:42.624Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-20691\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-03-25T15:11:57.221Z\", \"dateReserved\": \"2025-11-11T14:43:07.876Z\", \"assignerOrgId\": \"286789f9-fbc2-4510-9f9a-43facdede74c\", \"datePublished\": \"2026-03-25T00:35:42.624Z\", \"assignerShortName\": \"apple\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.