Unrated
Safari, iOS and iPadOS and 2 more products — security advisory
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.
- Products
- Safari, iOS and iPadOS, macOS, visionOS
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-20643
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 30 Oct 2026, 21:39 UTC · Revision 1
Source evidence
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.
cve:CVE-2026-20643
Safari
Fixed versions: Not specified
iOS and iPadOS
Fixed versions: Not specified
macOS
Fixed versions: Not specified
visionOS
Fixed versions: Not specified
Complete source record
{
"id": "9be24f7ecfc9d7d920d0dfc14a268234688a10755c055c80d8543060fd10acd1",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-20643",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2026-20643",
"summary": "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.",
"evidence": "cve:CVE-2026-20643",
"products": [
{
"name": {
"value": "Safari",
"evidence": "/containers/cna/affected/0/product"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": []
},
{
"name": {
"value": "iOS and iPadOS",
"evidence": "/containers/cna/affected/1/product"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": []
},
{
"name": {
"value": "macOS",
"evidence": "/containers/cna/affected/2/product"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": []
},
{
"name": {
"value": "visionOS",
"evidence": "/containers/cna/affected/3/product"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": []
}
],
"severity": "unknown",
"structured": {
"id": "CVE-2026-20643",
"aliases": [
"CVE-2026-20643"
],
"metrics": [],
"affected": [
{
"vendor": "Apple",
"product": "Safari",
"versions": [
{
"status": "affected",
"version": "0",
"lessThan": "26.4",
"versionType": "custom"
}
]
},
{
"vendor": "Apple",
"product": "iOS and iPadOS",
"versions": [
{
"status": "affected",
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},
{
"status": "affected",
"version": "0",
"lessThan": "26.3.1 (a)",
"versionType": "custom"
},
{
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},
{
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{
"status": "affected",
"version": "0",
"lessThan": "26.3.2 (a)",
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{
"status": "affected",
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},
{
"vendor": "Apple",
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"version": "0",
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"versionType": "custom"
}
]
}
],
"modified": "2026-10-26T20:40:02.537Z",
"provider": "cve",
"references": [
"https://support.apple.com/en-us/126604",
"https://support.apple.com/en-us/126792",
"https://support.apple.com/en-us/126793",
"https://support.apple.com/en-us/126794",
"https://support.apple.com/en-us/126799",
"https://support.apple.com/en-us/126800"
],
"provider_metadata": {
"adp": [
{
"title": "CISA ADP Vulnrichment",
"metrics": [
{
"cvssV3_1": {
"scope": "UNCHANGED",
"version": "3.1",
"baseScore": 5.4,
"attackVector": "NETWORK",
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N",
"integrityImpact": "LOW",
"userInteraction": "REQUIRED",
"attackComplexity": "LOW",
"availabilityImpact": "NONE",
"privilegesRequired": "NONE",
"confidentialityImpact": "LOW"
}
},
{
"other": {
"type": "ssvc",
"content": {
"id": "CVE-2026-20643",
"role": "CISA Coordinator",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"version": "2.0.3",
"timestamp": "2026-03-18T13:14:53.546083Z"
}
}
}
],
"problemTypes": [
{
"descriptions": [
{
"lang": "en",
"type": "CWE",
"cweId": "CWE-20",
"description": "CWE-20 Improper Input Validation"
}
]
},
{
"descriptions": [
{
"lang": "en",
"type": "CWE",
"cweId": "CWE-346",
"description": "CWE-346 Origin Validation Error"
}
]
}
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"providerMetadata": {
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"shortName": "CISA-ADP",
"dateUpdated": "2026-03-18T13:14:56.139Z"
}
},
{
"title": "CVE Program Container",
"references": [
{
"url": "http://seclists.org/fulldisclosure/2026/Mar/10"
}
],
"providerMetadata": {
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE",
"dateUpdated": "2026-03-19T16:18:46.731Z"
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],
"cna": {
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"shortName": "apple",
"dateUpdated": "2026-10-26T20:40:02.537Z"
}
}
},
"related_cves": [
{
"value": "CVE-2026-20643",
"evidence": "/cveMetadata/cveId"
}
],
"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-cve",
"document_id": 344344,
"published_at": "2026-03-17T22:29:48.227+00:00"
}