CVE-2026-20665

MEDIUM 6.5

CVSS Score

6.5

EPSS Score

0.0%

EPSS Percentile

0th

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.

Vendor	apple
Product	safari
Ecosystems	iOS macOS
Industries	Technology
Published	Mar 25, 2026
Last Updated	Apr 2, 2026

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Affected Versions

Apple / Safari

0 < 26.4

Apple / iOS and iPadOS

0 < 18.7.7 0 < 26.4

Apple / macOS

0 < 26.4

Apple / tvOS

0 < 26.4

Apple / visionOS

0 < 26.4

Apple / watchOS

0 < 26.4

References

NVD ↗ CVE.org ↗ EPSS Data ↗

support.apple.com: https://support.apple.com/en-us/126792 support.apple.com: https://support.apple.com/en-us/126793 support.apple.com: https://support.apple.com/en-us/126794 support.apple.com: https://support.apple.com/en-us/126797 support.apple.com: https://support.apple.com/en-us/126798 support.apple.com: https://support.apple.com/en-us/126799 support.apple.com: https://support.apple.com/en-us/126800