CVE-2026-20665

high

Published 2026-05-19 · Modified 2026-04-27

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CVSS v3

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CVSS v4 NEW

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not yet in upstream

VIR risk

8.0

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.

Predictions

Exploit likelihood

20%

Patch ETA

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Heuristic predictions, AS-IS, for prioritization only.

Mitigations

Mitigation details

Source: Apple Security HT · View original ↗ · proprietary-no-redistribution

Full prose not cached — VIR stores only structured fields (affected/fixed versions, references) for this source. Click "View original" above for the vendor's full advisory.

Affected

Vendor	Product	Version
apple	WebKit	`macOS Sonoma and macOS Sequoia`
apple	WebKit	`macOS Sonoma and macOS Sequoia`
apple	WebKit	`macOS Sonoma and macOS Sequoia`

OS impact

SUSE Affected 1 release

Version	Status	Fixed in
—	Affected	—

Debian Mixed 5 releases

Version	Status	Fixed in
trixie	Fixed	`2.52.3-2~deb13u1`
sid	Fixed	`2.52.1-1`
forky	Fixed	`2.52.1-1`
bullseye	Affected	—
bookworm	Affected	—

apple Fixed 1 release

Version	Status	Fixed in
26.4	Fixed	—

ios Fixed 2 releases

Version	Status	Fixed in
26.4	Fixed	—
18.7.7	Fixed	—

macOS Fixed 1 release

Version	Status	Fixed in
26.4	Fixed	—

Red Hat Fixed 2 releases

Version	Status	Fixed in
9	Fixed	—
8	Fixed	—

Rocky Linux Fixed 1 release

Version	Status	Fixed in
9	Fixed	—

safari Fixed 1 release

Version	Status	Fixed in
26.4	Fixed	—

tvos Fixed 1 release

Version	Status	Fixed in
26.4	Fixed	—

watchos Fixed 1 release

Version	Status	Fixed in
26.4	Fixed	—

References

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.