CVE-2026-20643 (GCVE-0-2026-20643)

Vulnerability from cvelistv5 – Published: 2026-03-17 22:29 – Updated: 2026-03-18 13:14
VLAI?
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 26.3.1, iPadOS 26.3.1, macOS 26.3.1, and macOS 26.3.2. Processing maliciously crafted web content may bypass Same Origin Policy.
Severity ?
5.4 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
CWE
  • Processing maliciously crafted web content may bypass Same Origin Policy
Assigner
References
Impacted products
Vendor Product Version
Apple macOS Affected: unspecified , < 26.3.2 (a) (custom)
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    Apple macOS Affected: unspecified , < 26.3.1 (a) (custom)
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    Apple iOS Affected: unspecified , < 26.3.1 (a) (custom)
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    Apple iPadOS Affected: unspecified , < 26.3.1 (a) (custom)
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  • 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.
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  • 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.