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CVE-2026-20643

A cross-origin issue in the Navigation API was addressed with improved input validation. This issue is fixed in Background Security Improvements for iOS, iPadOS, and macOS, Safari 26.4, iOS 18.7.7 and iPadOS 18.7.7, iOS 26.4 and iPadOS 26.4, macOS Tahoe 26.4, visionOS 26.4. Processing maliciously crafted web content may bypass Same Origin Policy.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:e9bc02b88cebfaaa01776e8b2536b6877eae23fa6fa0d333acf2f9b93eb7cf6e
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
2

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 4 assertions

{"product":"iOS and iPadOS","vendor":"Apple","versions":[{"lessThan":"18.7.7","status":"affected","version":"0","versionType":"custom"},{"lessThan":"26.3.1 (a)","status":"affected","version":"0","versionType":"custom"},{"lessThan":"26.4","status":"affected","version":"0","versionType":"custom"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:78e367f42ffc3405d6a6c1636636a04c6b54a4024481f2782775dfdc74df4d86 · sha256:45dfda6770149e43… · /containers/cna/affected/1

{"product":"visionOS","vendor":"Apple","versions":[{"lessThan":"26.4","status":"affected","version":"0","versionType":"custom"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:78e367f42ffc3405d6a6c1636636a04c6b54a4024481f2782775dfdc74df4d86 · sha256:45dfda6770149e43… · /containers/cna/affected/3

{"product":"Safari","vendor":"Apple","versions":[{"lessThan":"26.4","status":"affected","version":"0","versionType":"custom"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:78e367f42ffc3405d6a6c1636636a04c6b54a4024481f2782775dfdc74df4d86 · sha256:45dfda6770149e43… · /containers/cna/affected/0

{"product":"macOS","vendor":"Apple","versions":[{"lessThan":"26.3.1 (a)","status":"affected","version":"0","versionType":"custom"},{"lessThan":"26.3.2 (a)","status":"affected","version":"0","versionType":"custom"},{"lessThan":"26.4","status":"affected","version":"0","versionType":"custom"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:78e367f42ffc3405d6a6c1636636a04c6b54a4024481f2782775dfdc74df4d86 · sha256:45dfda6770149e43… · /containers/cna/affected/2
cwe · 3 assertions

{"cweId":"CWE-346","description":"CWE-346 Origin Validation Error","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:78e367f42ffc3405d6a6c1636636a04c6b54a4024481f2782775dfdc74df4d86 · sha256:45dfda6770149e43… · /containers/adp/0/problemTypes/1/descriptions/0

{"description":"Processing maliciously crafted web content may bypass Same Origin Policy","lang":"en"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:78e367f42ffc3405d6a6c1636636a04c6b54a4024481f2782775dfdc74df4d86 · sha256:45dfda6770149e43… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-20","description":"CWE-20 Improper Input Validation","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:78e367f42ffc3405d6a6c1636636a04c6b54a4024481f2782775dfdc74df4d86 · sha256:45dfda6770149e43… · /containers/adp/0/problemTypes/0/descriptions/0

Affected products and versions

4 source assertions
{"product":"iOS and iPadOS","vendor":"Apple","versions":[{"lessThan":"18.7.7","status":"affected","version":"0","versionType":"custom"},{"lessThan":"26.3.1 (a)","status":"affected","version":"0","versionType":"custom"},{"lessThan":"26.4","status":"affected","version":"0","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:78e367f42ffc3405d6a6c1636636a04c6b54a4024481f2782775dfdc74df4d86 · sha256:45dfda6770149e43… · /containers/cna/affected/1
{"product":"visionOS","vendor":"Apple","versions":[{"lessThan":"26.4","status":"affected","version":"0","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:78e367f42ffc3405d6a6c1636636a04c6b54a4024481f2782775dfdc74df4d86 · sha256:45dfda6770149e43… · /containers/cna/affected/3
{"product":"Safari","vendor":"Apple","versions":[{"lessThan":"26.4","status":"affected","version":"0","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:78e367f42ffc3405d6a6c1636636a04c6b54a4024481f2782775dfdc74df4d86 · sha256:45dfda6770149e43… · /containers/cna/affected/0
{"product":"macOS","vendor":"Apple","versions":[{"lessThan":"26.3.1 (a)","status":"affected","version":"0","versionType":"custom"},{"lessThan":"26.3.2 (a)","status":"affected","version":"0","versionType":"custom"},{"lessThan":"26.4","status":"affected","version":"0","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:78e367f42ffc3405d6a6c1636636a04c6b54a4024481f2782775dfdc74df4d86 · sha256:45dfda6770149e43… · /containers/cna/affected/2

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":5.4,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:78e367f42ffc3405d6a6c1636636a04c6b54a4024481f2782775dfdc74df4d86 · sha256:45dfda6770149e43… · /containers/adp/0/metrics/0/cvssV3_1

CWE assertions

3 source assertions
{"cweId":"CWE-346","description":"CWE-346 Origin Validation Error","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:78e367f42ffc3405d6a6c1636636a04c6b54a4024481f2782775dfdc74df4d86 · sha256:45dfda6770149e43… · /containers/adp/0/problemTypes/1/descriptions/0
{"description":"Processing maliciously crafted web content may bypass Same Origin Policy","lang":"en"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:78e367f42ffc3405d6a6c1636636a04c6b54a4024481f2782775dfdc74df4d86 · sha256:45dfda6770149e43… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-20","description":"CWE-20 Improper Input Validation","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:78e367f42ffc3405d6a6c1636636a04c6b54a4024481f2782775dfdc74df4d86 · sha256:45dfda6770149e43… · /containers/adp/0/problemTypes/0/descriptions/0

Source references

7 source assertions
{"url":"http://seclists.org/fulldisclosure/2026/Mar/10"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:78e367f42ffc3405d6a6c1636636a04c6b54a4024481f2782775dfdc74df4d86 · sha256:45dfda6770149e43… · /containers/adp/1/references/0
{"url":"https://support.apple.com/en-us/126604"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:78e367f42ffc3405d6a6c1636636a04c6b54a4024481f2782775dfdc74df4d86 · sha256:45dfda6770149e43… · /containers/cna/references/0
{"url":"https://support.apple.com/en-us/126792"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:78e367f42ffc3405d6a6c1636636a04c6b54a4024481f2782775dfdc74df4d86 · sha256:45dfda6770149e43… · /containers/cna/references/1
{"url":"https://support.apple.com/en-us/126793"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:78e367f42ffc3405d6a6c1636636a04c6b54a4024481f2782775dfdc74df4d86 · sha256:45dfda6770149e43… · /containers/cna/references/2
{"url":"https://support.apple.com/en-us/126794"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:78e367f42ffc3405d6a6c1636636a04c6b54a4024481f2782775dfdc74df4d86 · sha256:45dfda6770149e43… · /containers/cna/references/3
{"url":"https://support.apple.com/en-us/126799"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:78e367f42ffc3405d6a6c1636636a04c6b54a4024481f2782775dfdc74df4d86 · sha256:45dfda6770149e43… · /containers/cna/references/4
{"url":"https://support.apple.com/en-us/126800"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:78e367f42ffc3405d6a6c1636636a04c6b54a4024481f2782775dfdc74df4d86 · sha256:45dfda6770149e43… · /containers/cna/references/5

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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