Information disclosure in WPE WebKit and WebKitGTK+ - CVE-2026-64778

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Main Vulnerability Database Vulnerabilities #VU143957

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
tvOS
watchOS
visionOS
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
tvOS - update to 27.0 24J361
watchOS - update to 27.0 24R364
visionOS - update to 27.0

External References

Related Security Bulletins