CVE-2026-20665

MEDIUM 6.5CVE-2026-20665 · Published 25/03/2026 · updated 17/06/2026

In short

CVE-2026-20665 is a MEDIUM (CVSS 6.5) vulnerability affecting safari (apple).
Chance of exploitation in the next 30 days (EPSS): 0.63%, higher than 50.4% of all vulnerabilities.
Fix: update to 26.4 or later.

Package	Affected versions	Patched versions
safari apple	`< 26.4`	`26.4`

Description

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.

References

support.apple.com/en-us/126792 · Release Notes
support.apple.com/en-us/126793 · Release Notes
support.apple.com/en-us/126794 · Release Notes
support.apple.com/en-us/126797 · Release Notes
support.apple.com/en-us/126798 · Release Notes
support.apple.com/en-us/126799 · Release Notes
support.apple.com/en-us/126800 · Release Notes

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Package

Affected versions

Patched versions

safari

apple

< 26.4

26.4

Description

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