Information disclosure in WPE WebKit and WebKitGTK+ - CVE-2026-64778
Published: August 18, 2026
Vulnerability identifier: #VU143957
CSH Severity: Medium
CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-64778
CWE-ID: CWE-200
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to excessive data output in WebKit History. A remote attacker can gain unauthorized access to sensitive information.
Affected software
WPE WebKit
WebKitGTK+
iPadOS
Apple iOS
macOS
Apple Safari
WebKitGTK+
iPadOS
Apple iOS
macOS
Apple Safari
How to mitigate CVE-2026-64778
Install updates from vendor's website.
iPadOS - addressed in versions 18.7.10 22H374, 26.6.1 23G83
Apple iOS - addressed in versions 18.7.10 22H374, 26.6.1 23G83
macOS - update to 26.6.2 25G83
Apple Safari - update to 26.6.1
Apple iOS - addressed in versions 18.7.10 22H374, 26.6.1 23G83
macOS - update to 26.6.2 25G83
Apple Safari - update to 26.6.1