CVE-2026-28946

webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash

Published May 11, 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, macOS Tahoe 26.5. Processing maliciously crafted web content may lead to an unexpected Safari 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
Title Use‑After‑Free Crash in Safari via Malicious Web Content webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash
References
Metrics threat_severity

None

threat_severity

Important

Type Values Removed Values Added
Title Use‑After‑Free Crash in Safari via Malicious Web Content
Type Values Removed Values Added
Description A use-after-free issue was addressed with improved memory management. This issue is fixed in macOS Tahoe 26.5. Processing maliciously crafted web content may lead to an unexpected Safari crash. A use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 26.5, macOS Tahoe 26.5. Processing maliciously crafted web content may lead to an unexpected Safari crash.
References
Type Values Removed Values Added
CPEs cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*
Type Values Removed Values Added
Title Use‑After‑Free in Safari Causing Crash with Malicious Web Content
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 in Safari Causing Crash with Malicious Web Content
First Time appeared Apple
Apple macos
Weaknesses CWE-416
Vendors & Products Apple
Apple macos
Type Values Removed Values Added
Description A use-after-free issue was addressed with improved memory management. This issue is fixed in macOS Tahoe 26.5. Processing maliciously crafted web content may lead to an unexpected Safari crash.
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
apple
Published
Updated
Jul 15, 2026, 1:11 AM
Reserved
Mar 3, 2026, 4:36 PM
Status
Modified
Published
May 11, 2026, 9:18 PM
Modified
Oct 26, 2026, 6:10 PM
Severity
Important
Public date
Jun 2, 2026, 12:00 AM