{"id":"CVE-2026-20643","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-20643","generatedAt":"2026-10-28T02:56:30.857Z","title":"Processing maliciously crafted web content may bypass Same Origin Policy.","description":"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.","published":"2026-03-17T23:16:17.000Z","lastModified":"2026-06-17T10:17:36.000Z","status":"Modified","sourceIdentifier":"product-security@apple.com","cvss":{"version":"3.1","score":5.4,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N"},"cwe":["CWE-20","CWE-346"],"affected":["apple/ipados","apple/iphone os","apple/macos"],"epss":{"score":0.0036,"percentile":0.29556,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.36%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://support.apple.com/en-us/126604","tags":["Release Notes","Vendor Advisory"],"source":"product-security@apple.com"},{"url":"https://support.apple.com/en-us/126792","source":"product-security@apple.com"},{"url":"https://support.apple.com/en-us/126793","source":"product-security@apple.com"},{"url":"https://support.apple.com/en-us/126794","source":"product-security@apple.com"},{"url":"https://support.apple.com/en-us/126799","source":"product-security@apple.com"},{"url":"https://support.apple.com/en-us/126800","source":"product-security@apple.com"},{"url":"http://seclists.org/fulldisclosure/2026/Mar/10","source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-20643","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}