APPLE-SA-06-29-2026-3 Safari 26.5.2

[Apple Product Security via Fulldisclosure <fulldisclosure () seclists org>]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256

APPLE-SA-06-29-2026-3 Safari 26.5.2

Safari 26.5.2 addresses the following issues.
Information about the security content is also available at
https://support.apple.com/en-us/127685.

Apple maintains a Security Releases page at
https://support.apple.com/100100 which lists recent
software updates with security advisories.

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: Merrick Hare, Drinor Selmanaj (Sentry), Khai Tran, John
Lussier, Rhyru9, Kwak Kiyong, Song Nuri

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: 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

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: 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

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: Tuan and Duc from Calif.io, OpenAI Codex Security - Amy
Burnett, Evan Lambert

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: 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 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 Henock Habte, Souta Sugiyama for their
assistance.

WebKit JavaScript Bindings
We would like to acknowledge Karan Kurani for their assistance.

Safari 26.5.2 may be obtained from the Mac App Store.

All information is also posted on the Apple Security Releases
web site: https://support.apple.com/100100.

This message is signed with Apple's Product Security PGP key,
and details are available at:
https://www.apple.com/support/security/pgp/

-----BEGIN PGP SIGNATURE-----
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=orbO
-----END PGP SIGNATURE-----

_______________________________________________
Sent through the Full Disclosure mailing list
https://nmap.org/mailman/listinfo/fulldisclosure
Web Archives & RSS: https://seclists.org/fulldisclosure/