CVE-2026-20665

MEDIUM

Safari < 26.4 - Content Security Policy Bypass via Malicious Web Content

Title source: llm
STIX 2.1

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 (7)

Core 7

Scores

CVSS v3 6.5
EPSS 0.0061
EPSS Percentile 44.3%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

CWE
CWE-693
Status published
Products (14)
Apple/iOS and iPadOS < 18.7.7
Apple/iOS and iPadOS < 26.4
apple/ipados < 18.7.7
apple/iphone_os < 18.7.7
Apple/macOS < 26.4
apple/macos < 26.4
Apple/Safari < 26.4
apple/safari < 26.4
Apple/tvOS < 26.4
apple/tvos < 26.4
... and 4 more
Published Mar 25, 2026
Tracked Since Mar 25, 2026