CVE-2026-43699

webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash

Published Jun 29, 2026 CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
Description
A use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 26.5.2, iOS 18.7.10 and iPadOS 18.7.10, iOS 26.5.2 and iPadOS 26.5.2, macOS Tahoe 26.5.2, tvOS 26.6, visionOS 26.6, watchOS 26.6. Processing maliciously crafted web content may lead to an unexpected process crash.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Debian DSA Debian DSA DSA-6398-1 webkit2gtk security update
Ubuntu USN Ubuntu USN USN-8703-1 WebKitGTK vulnerabilities
History
Type Values Removed Values Added
Description A use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 26.5.2, iOS 26.5.2 and iPadOS 26.5.2, macOS Tahoe 26.5.2, tvOS 26.6, visionOS 26.6, watchOS 26.6. Processing maliciously crafted web content may lead to an unexpected process crash. A use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 26.5.2, iOS 18.7.10 and iPadOS 18.7.10, iOS 26.5.2 and iPadOS 26.5.2, macOS Tahoe 26.5.2, tvOS 26.6, visionOS 26.6, watchOS 26.6. Processing maliciously crafted web content may lead to an unexpected process crash.
References
Type Values Removed Values Added
Description A use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 26.5.2, iOS 26.5.2 and iPadOS 26.5.2, macOS Tahoe 26.5.2. Processing maliciously crafted web content may lead to an unexpected process crash. A use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 26.5.2, iOS 26.5.2 and iPadOS 26.5.2, macOS Tahoe 26.5.2, tvOS 26.6, visionOS 26.6, watchOS 26.6. Processing maliciously crafted web content may lead to an unexpected process crash.
References
Type Values Removed Values Added
Title webkitgtk: webkitgtk: Maliciously crafted web content may cause unexpected process crash
References
Metrics threat_severity

None

threat_severity

Moderate

Type Values Removed Values Added
First Time appeared Apple
Apple ios And Ipados
Apple macos
Apple safari
Vendors & Products Apple
Apple ios And Ipados
Apple macos
Apple safari
Type Values Removed Values Added
Title Use‑After‑Free Leading to Process Crash in Apple Browsers and OS
Type Values Removed Values Added
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Title Use‑After‑Free Leading to Process Crash in Apple Browsers and OS
Weaknesses CWE-416
Type Values Removed Values Added
Description A use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 26.5.2, iOS 26.5.2 and iPadOS 26.5.2, macOS Tahoe 26.5.2. Processing maliciously crafted web content may lead to an unexpected process crash.
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
apple
Published
Updated
Aug 17, 2026, 9:29 PM
Reserved
May 1, 2026, 10:46 PM
Status
Modified
Published
Jun 29, 2026, 8:17 PM
Modified
Aug 17, 2026, 10:17 PM
Severity
Moderate
Public date
Jul 10, 2026, 12:00 AM