Information disclosure in WebKitGTK+ and WPE WebKit - CVE-2025-43376

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Main Vulnerability Database Vulnerabilities #VU118081

Information disclosure in WebKitGTK+ and WPE WebKit - CVE-2025-43376

Published: November 4, 2025


Vulnerability identifier: #VU118081
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-2025-43376
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 a logic issue in WebKit. A remote attacker can view leaked DNS queries with Private Relay turned on.


Affected software

WebKitGTK+
WPE WebKit
iPadOS
Apple iOS
macOS
watchOS
tvOS
visionOS
Apple Safari

How to mitigate CVE-2025-43376

Install updates from vendor's website.

iPadOS - addressed in versions 18.7.7 22H333, 26.0 23A341
Apple iOS - addressed in versions 18.7.7 22H333, 26.0 23A341
macOS - update to 26.0 25A354
watchOS - update to 26.0 23R352
Apple Safari - update to 26.0
tvOS - update to 26.0 23J353
visionOS - update to 26.0 23M336

External References

Related Security Bulletins