Safari 26.6.1

Name and information link Available for Release date Safari 26.6.1 Safari 26.6.1 macOS Sonoma and macOS Sequoia macOS Sonoma and macOS Sequoia 18 Aug 2026 18 Aug 2026 This update delivers security fixes that were first made available in the macOS Golden Gate 27 beta.

This document describes the security content of Safari 26.6.1.

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For more information about security, see the Apple Product Security page. Safari 26.6.1 Released August 18, 2026 WebKit Available for: macOS Sonoma and macOS Sequoia Impact: Processing maliciously crafted web content may lead to an unexpected Safari crash Description: An out-of-bounds access issue was addressed with improved bounds checking.

WebKit Bugzilla: 317632 CVE-2026-64784: Janggoon Lee of Out of Bounds, OpenAI Codex Security - Amy Burnett WebKit Available for: macOS Sonoma and macOS Sequoia Impact: Processing maliciously crafted web content may lead to an unexpected Safari crash Description: The issue was addressed with improved memory handling.

WebKit Bugzilla: 313452 CVE-2026-43795: wwwlk WebKit Bugzilla: 318348 CVE-2026-65338: OpenAI Codex Security - Amy Burnett WebKit Available for: macOS Sonoma and macOS Sequoia Impact: Processing maliciously crafted web content may lead to memory corruption Description: The issue was addressed with improved memory handling.

WebKit Bugzilla: 318405 CVE-2026-65341: Henock Habte WebKit Available for: macOS Sonoma and macOS Sequoia Impact: Processing maliciously crafted web content may lead to an unexpected Safari crash Description: A memory corruption vulnerability was addressed with improved locking.

WebKit Bugzilla: 321480 CVE-2026-64782: Seonwook Kim, Shubham Chaskar, lattice, Josef Korbel WebKit Available for: macOS Sonoma and macOS Sequoia Impact: Processing maliciously crafted web content may lead to an unexpected Safari crash Description: The issue was addressed with improved input validation.

WebKit Bugzilla: 321484 CVE-2026-64781: Thomas Guillem WebKit Available for: macOS Sonoma and macOS Sequoia Impact: Processing maliciously crafted web content may lead to an unexpected Safari crash Description: This issue was addressed through improved state management.

WebKit Bugzilla: 321517 CVE-2026-65351: Niels Hofmans WebKit Bugzilla: 316996 CVE-2026-65340: Claudio Bozzato and Francesco Benvenuto of Cisco Talos, Josef Korbel (Citadelo) WebKit Bugzilla: 317142 CVE-2026-65337: OpenAI Codex Security - Amy Burnett WebKit Bugzilla: 317349 CVE-2026-65336: Josef Korbel WebKit Bugzilla: 316723 CVE-2026-65335: OpenAI Codex Security - Amy Burnett WebKit Bugzilla: 317603 CVE-2026-65333: OpenAI Codex Security - Amy Burnett WebKit Bugzilla: 317450 CVE-2026-65332: OpenAI Codex Security - Amy Burnett WebKit Bugzilla: 317611 CVE-2026-65331: OpenAI Codex Security - Amy Burnett WebKit Available for: macOS Sonoma and macOS Sequoia Impact: Processing maliciously crafted web content may lead to an unexpected process crash Description: A use-after-free issue was addressed with improved memory management.

WebKit Bugzilla: 316347 CVE-2026-64715: Hossein Lotfi (@hosselot) of TrendAI Zero Day Initiative WebKit Available for: macOS Sonoma and macOS Sequoia Impact: Processing maliciously crafted web content may lead to an unexpected Safari crash Description: The issue was addressed with improved checks.

WebKit Bugzilla: 316918 CVE-2026-64780: OpenAI Codex Security - Amy Burnett WebKit Available for: macOS Sonoma and macOS Sequoia Impact: Processing maliciously crafted web content may lead to an unexpected Safari crash Description: A memory corruption issue was addressed with improved state management.

WebKit Bugzilla: 316791 CVE-2026-65334: OpenAI Codex Security - Amy Burnett WebKit Available for: macOS Sonoma and macOS Sequoia Impact: Processing maliciously crafted web content may lead to memory corruption Description: A memory corruption issue was addressed with improved memory handling.

WebKit Bugzilla: 317317 CVE-2026-43794: Dung Do (@_piers2) of Calif.io WebKit Available for: macOS Sonoma and macOS Sequoia Impact: Processing maliciously crafted web content may lead to an unexpected process termination Description: A use-after-free issue was addressed with improved memory management.

WebKit Bugzilla: 313703 CVE-2026-64787: 杉山 壮太, Shubham Chaskar WebKit History Available for: macOS Sonoma and macOS Sequoia Impact: Visiting a maliciously crafted website may leak sensitive data Description: The issue was addressed with improved checks.

WebKit Bugzilla: 322124 CVE-2026-64778: Mohit Negi WebKit Storage Available for: macOS Sonoma and macOS Sequoia Impact: Processing maliciously crafted web content may lead to an unexpected Safari crash Description: A memory corruption vulnerability was addressed with improved locking.

WebKit Bugzilla: 321485 CVE-2026-64779: Shubham Chaskar, Tommy DeVoss from Braze Security Team (@thedawgyg) Additional recognition WebKit We would like to acknowledge Henock Habte for their assistance. Information about products not manufactured by Apple, or independent websites not controlled or tested by Apple, is provided without recommendation or endorsement.

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