Safari 26.5.2

Name and information link Available for Release date Safari 26.5.2 Safari 26.5.2 macOS Sonoma and macOS Sequoia macOS Sonoma and macOS Sequoia 29 Jun 2026 29 Jun 2026 This update delivers security fixes that were first made available in the macOS Tahoe 26.6 beta.

This document describes the security content of Safari 26.5.2.

About Apple security updates For our customers' protection, Apple doesn't disclose, discuss, or confirm security issues until an investigation has occurred and patches or releases are available. Recent releases are listed on the Apple security releases page. Apple security documents reference vulnerabilities by CVE-ID when possible.

For more information about security, see the Apple Product Security page. Safari 26.5.2 Released June 29, 2026 Web Extensions Available for: macOS Sonoma and macOS Sequoia Impact: A malicious web extension may be able to cause an unexpected process crash Description: A use-after-free issue was addressed with improved memory management.

WebKit Bugzilla: 314642 CVE-2026-43704: dr3dd WebKit Available for: macOS Sonoma and macOS Sequoia Impact: Processing maliciously crafted web content may disclose sensitive user information Description: A cross-origin issue was addressed with improved tracking of security origins.

WebKit Bugzilla: 315368 CVE-2026-43700: Vitaly Simonovich, Christian Meurer Xavier WebKit Available for: macOS Sonoma and macOS Sequoia Impact: A malicious website may exfiltrate data cross-origin Description: The issue was addressed with improved checks.

WebKit Bugzilla: 313357 CVE-2026-43735: Gurpreet Shergill, Merrick Hare, Drinor Selmanaj (Sentry), Khai Tran, John Lussier, Rhyru9, Kwak Kiyong, Song Nuri Entry updated July 27, 2026 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: 313693 CVE-2026-43734: Jonathan Alush-Aben WebKit Bugzilla: 313857 CVE-2026-43726: stratan (@5tratan) of Almamater Technologies, Josef Korbel (Citadelo), Tristan Madani (@TristanInSec) from Talence Security, Gia Bui (@yabeow) from Calif.io, Narendra Singh (@_3P1C) WebKit Bugzilla: 314398 CVE-2026-43709 WebKit Bugzilla: 317227 CVE-2026-43699: Tommy DeVoss from Braze Security Team (@thedawgyg) WebKit Bugzilla: 315161 CVE-2026-43742: Юлия Мерцалова Entry updated July 27, 2026 WebKit Available for: macOS Sonoma and macOS Sequoia Impact: Processing maliciously crafted web content may disclose sensitive user information Description: A path handling issue was addressed with improved validation.

WebKit Bugzilla: 313085 CVE-2026-43732: Nan Wang (@eternalsakura13) WebKit Available for: macOS Sonoma and macOS Sequoia Impact: Processing maliciously crafted web content may lead to memory corruption Description: A use-after-free issue was addressed with improved memory management.

WebKit Bugzilla: 314115 CVE-2026-43731: dr3dd WebKit Bugzilla: 313577 CVE-2026-43715: Milad Nasr and Nicholas Carlini with Claude, Anthropic WebKit Available for: macOS Sonoma and macOS Sequoia Impact: Processing maliciously crafted web content may lead to an unexpected Safari crash Description: A use-after-free issue was addressed with improved memory management.

WebKit Bugzilla: 313691 CVE-2026-43727: Tommy DeVoss from Braze Security Team (@thedawgyg), Gia Bui (@yabeow) from Calif.io, Gurpreet Shergill WebKit Available for: macOS Sonoma and macOS Sequoia Impact: A malicious website may be able to process restricted web content outside the sandbox Description: The issue was addressed with improved input validation.

WebKit Bugzilla: 312832 CVE-2026-43725: Luke Francis WebKit Available for: macOS Sonoma and macOS Sequoia Impact: Processing maliciously crafted web content may lead to an unexpected process crash Description: The issue was addressed with improved memory handling.

WebKit Bugzilla: 312781 CVE-2026-43663: stratan (@5tratan) of Almamater Technologies, Soyeon Park, Amy Burnett, Khai Tran, sherkito, Kota Toda, HexRabbit (@h3xr4bb1t) and NiNi (@terrynini38514) of DEVCORE Research Team, Using GLM From Z.AI, Tristan Madani (@TristanInSec) from Talence Security, Brian Carpenter WebKit Bugzilla: 313528 CVE-2026-39872: Utkarsh Pal, Ignacio Sanmillan (@ulexec) WebKit Bugzilla: 314235 CVE-2026-43712: Kwak Kiyong, Song Nuri, Tristan Madani (@TristanInSec) from Talence Security Entry updated July 27, 2026 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: 313473 CVE-2026-43716: Maher Azzouzi, Tuan and Duc from Calif.io, OpenAI Codex Security - Amy Burnett, Evan Lambert Entry updated July 27, 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: 317231 CVE-2026-43676: Mateusz Krzywicki (iVerify.io), dr3dd, Tommy DeVoss from Braze Security Team (@thedawgyg) WebKit Available for: macOS Sonoma and macOS Sequoia Impact: Processing maliciously crafted web content may result in the disclosure of process memory Description: The issue was addressed with improved memory handling.

WebKit Bugzilla: 308046 CVE-2026-43740: Nathaniel Oh (@calysteon), Arni Hardarson WebKit Available for: macOS Sonoma and macOS Sequoia Impact: Visiting a website may leak sensitive data Description: A permissions issue was addressed with additional restrictions.

WebKit Bugzilla: 314806 CVE-2026-43713: Jody Ritonga WebKit Available for: macOS Sonoma and macOS Sequoia Impact: A malicious website may exfiltrate data cross-origin Description: The issue was addressed with improved input validation.

WebKit Bugzilla: 315306 CVE-2026-43708: Behzad Najjarpour Jabbari (@_G4ru_) WebKit Available for: macOS Sonoma and macOS Sequoia Impact: Processing maliciously crafted web content may lead to an unexpected process crash Description: A memory corruption issue was addressed with improved memory handling.

WebKit Bugzilla: 315951 CVE-2026-43707: stratan (@5tratan) of Almamater Technologies, OpenAI Codex Security - Amy Burnett Entry updated July 27, 2026 WebKit Available for: macOS Sonoma and macOS Sequoia Impact: Processing maliciously crafted web content may lead to memory corruption Description: A type confusion issue was addressed with improved checks.

WebKit Bugzilla: 314528 CVE-2026-43705: dr3dd WebKit Available for: macOS Sonoma and macOS Sequoia Impact: A malicious website may be able to process restricted web content outside the sandbox Description: The issue was addressed with improved checks.

WebKit Bugzilla: 315004 CVE-2026-43701: Aaron Grattafiori - NVIDIA AI Red Team 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 write issue was addressed with improved input validation.

WebKit Bugzilla: 315365 CVE-2026-43745: OpenAI Codex Security - Amy Burnett, Khai Tran WebKit Canvas Available for: macOS Sonoma and macOS Sequoia Impact: Processing maliciously crafted web content may lead to an unexpected Safari crash Description: A use-after-free issue was addressed with improved memory management.

WebKit Bugzilla: 313175 CVE-2026-43720: Gia Bui (@yabeow) from Calif.io, Josef Korbel WebKit Storage Available for: macOS Sonoma and macOS Sequoia Impact: A malicious website may be able to silently hijack clipboard data Description: This issue was addressed through improved state management.

WebKit Bugzilla: 313478 CVE-2026-43721: Idan Masas WebRTC Available for: macOS Sonoma and macOS Sequoia Impact: Processing maliciously crafted web content may lead to an unexpected process crash Description: An out-of-bounds access issue was addressed with improved bounds checking.

WebKit Bugzilla: 317324 CVE-2026-28979 WebRTC Available for: macOS Sonoma and macOS Sequoia Impact: Processing maliciously crafted web content may lead to an unexpected Safari crash Description: A stack overflow was addressed with improved input validation.

WebKit Bugzilla: 313350 CVE-2026-43718: Nan Wang (@eternalsakura13) WebRTC Available for: macOS Sonoma and macOS Sequoia Impact: Processing maliciously crafted web content may lead to an unexpected Safari crash Description: A use-after-free issue was addressed with improved memory management.

WebKit Bugzilla: 313351 CVE-2026-43717: Nan Wang (@eternalsakura13) WebKit Bugzilla: 314090 CVE-2026-43746: dr3dd Additional recognition WebKit We would like to acknowledge Gurpreet Shergill, Henock Habte, Souta Sugiyama for their assistance. Entry updated July 27, 2026 WebKit JavaScript Bindings We would like to acknowledge Karan Kurani for their assistance.

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