CVE-2026-20665

Summary

This issue was addressed through improved state management. This issue is fixed in Safari 26.4, iOS 18.7.7 and iPadOS 18.7.7, iOS 26.4 and iPadOS 26.4, macOS Tahoe 26.4, tvOS 26.4, visionOS 26.4, watchOS 26.4. Processing maliciously crafted web content may prevent Content Security Policy from being enforced.

Affected Software

VendorProductVersion RangeStatus
AppleSafari0 < 26.4affected
AppleiOS and iPadOS0 < 18.7.7affected
AppleiOS and iPadOS0 < 26.4affected
ApplemacOS0 < 26.4affected
AppletvOS0 < 26.4affected
ApplevisionOS0 < 26.4affected
ApplewatchOS0 < 26.4affected

Weaknesses

  • Processing maliciously crafted web content may prevent Content Security Policy from being enforced

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: yes
    • Technical Impact: partial

References