Improper Initialization in WebKitGTK+ and WPE WebKit - CVE-2025-46299

Vulnerability identifier: #VU121151

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-2025-46299

CWE-ID: CWE-665

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists due to improper initialization in WebKit. A remote attacker can trick the victim into visiting a specially crafted website and disclose internal states of the app.

WebKitGTK+
WPE WebKit
Debian Linux
SUSE Linux Enterprise Server 15 SP6
SUSE Linux Enterprise Server 15 SP5
SUSE Linux Enterprise Server 15 SP4
SUSE Linux Enterprise Server 12 SP5 LTSS Extended
SUSE Linux Enterprise Server 12 SP5
SUSE Linux Enterprise High Performance Computing 15
SUSE Linux Enterprise High Performance Computing ESPOS 15
SUSE Linux Enterprise High Performance Computing LTSS 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise Server for SAP Applications 12
SUSE Linux Enterprise Server 12
SUSE Linux Enterprise High Performance Computing 12
SUSE Linux Enterprise Real Time 15
SUSE Linux Enterprise Desktop 15
Red Hat Enterprise Linux for IBM z Systems
Anolis OS
Red Hat Enterprise Linux for ARM 64
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux for x86_64
Red Hat Enterprise Linux Server - AUS
Red Hat Enterprise Linux Server - TUS
Red Hat Enterprise Linux for ARM 64 - Extended Update Support
Red Hat Enterprise Linux for Power, little endian - Extended Update Support
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support
Red Hat Enterprise Linux for x86_64 - Extended Update Support
Basesystem Module
Desktop Applications Module
Development Tools Module
openSUSE Leap
Ubuntu
macOS
iPadOS
Apple iOS
tvOS
visionOS
watchOS
Fedora
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions
javascriptcoregtk6.0-devel
webkitgtk6.0-doc
webkit2gtk4.1-doc
webkitgtk6.0-devel
webkitgtk6.0
webkit2gtk4.1-devel
javascriptcoregtk4.1
javascriptcoregtk4.1-devel
javascriptcoregtk6.0
webkit2gtk4.1
webkitgtk
typelib-1_0-WebKit2WebExtension-4_0
webkit2gtk-4_0-injected-bundles-debuginfo
libwebkit2gtk3-lang
webkit2gtk3-devel
libwebkit2gtk-4_0-37
typelib-1_0-WebKit2-4_0
webkit2gtk-4_0-injected-bundles
libjavascriptcoregtk-4_0-18
webkit2gtk3-debugsource
typelib-1_0-JavaScriptCore-4_0
libjavascriptcoregtk-4_0-18-debuginfo
libwebkit2gtk-4_0-37-debuginfo
libjavascriptcoregtk-4_1-0-debuginfo
webkit2gtk3-soup2-minibrowser
libwebkitgtk-6_0-4
typelib-1_0-WebKit2-4_1
libwebkitgtk-6_0-4-debuginfo
webkit2gtk4-minibrowser-debuginfo
webkit2gtk-4_1-injected-bundles
webkit2gtk3-soup2-debugsource
webkit2gtk3-soup2-minibrowser-debuginfo
webkit-jsc-4
libwebkit2gtk-4_1-0
libjavascriptcoregtk-4_1-0
typelib-1_0-WebKit-6_0
webkit-jsc-4.1
webkit2gtk4-devel
webkitgtk-6_0-injected-bundles
webkit2gtk-4_1-injected-bundles-debuginfo
libjavascriptcoregtk-4_1-0-32bit
libwebkit2gtk-4_1-0-32bit-debuginfo
libjavascriptcoregtk-4_1-0-32bit-debuginfo
libwebkit2gtk-4_1-0-32bit
libwebkit2gtk-4_0-37-32bit-debuginfo
libjavascriptcoregtk-4_0-18-32bit-debuginfo
libjavascriptcoregtk-4_0-18-32bit
libwebkit2gtk-4_0-37-32bit
libwebkit2gtk-4_1-0-64bit
libjavascriptcoregtk-4_0-18-64bit
typelib-1_0-JavaScriptCore-6_0
libwebkit2gtk-4_0-37-64bit
libjavascriptcoregtk-4_1-0-64bit
libwebkit2gtk-4_1-0-64bit-debuginfo
libwebkit2gtk-4_0-37-64bit-debuginfo
libjavascriptcoregtk-4_0-18-64bit-debuginfo
libjavascriptcoregtk-4_1-0-64bit-debuginfo
WebKitGTK-4.1-lang
WebKitGTK-4.0-lang
WebKitGTK-6.0-lang
webkitgtk-6_0-injected-bundles-debuginfo
webkit-jsc-4-debuginfo
libjavascriptcoregtk-6_0-1
webkit-jsc-6.0
typelib-1_0-JavaScriptCore-4_1
webkit2gtk3-minibrowser-debuginfo
webkit2gtk4-minibrowser
webkit2gtk3-minibrowser
webkit2gtk3-soup2-devel
webkit-jsc-4.1-debuginfo
typelib-1_0-WebKitWebProcessExtension-6_0
webkit2gtk4-debugsource
typelib-1_0-WebKit2WebExtension-4_1
libjavascriptcoregtk-6_0-1-debuginfo
webkit-jsc-6.0-debuginfo
libwebkit2gtk-4_1-0-debuginfo
webkit2gtk (Debian package)
webkit2gtk3 (Red Hat package)
webkit2gtk (Ubuntu package)
webkitgtk4 (Red Hat package)
webkit2gtk3
webkit2gtk3-jsc
webkit2gtk3-jsc-devel
Apple Safari

Install updates from vendor's website.

WebKitGTK+ - update to 2.52.0
WPE WebKit - update to 2.52.0
macOS - update to 26.2 25C56
Apple Safari - update to 26.2
iPadOS - update to 26.2 23C55
Apple iOS - update to 26.2 23C55
tvOS - update to 26.2 23K54
visionOS - update to 26.2
watchOS - update to 26.2 23S303
javascriptcoregtk6.0-devel - update to 2.50.6-1
webkitgtk6.0-doc - update to 2.50.6-1
webkit2gtk4.1-doc - update to 2.50.6-1
webkitgtk6.0-devel - update to 2.50.6-1
webkitgtk6.0 - update to 2.50.6-1
webkit2gtk4.1-devel - update to 2.50.6-1
javascriptcoregtk4.1 - update to 2.50.6-1
javascriptcoregtk4.1-devel - update to 2.50.6-1
javascriptcoregtk6.0 - update to 2.50.6-1
webkit2gtk4.1 - update to 2.50.6-1
webkitgtk - addressed in versions 2.52.0-1.fc42, 2.52.0-1.fc43, 2.52.0-1.fc44, 2.52.1-1.fc44
typelib-1_0-WebKit2WebExtension-4_0 - addressed in versions 2.52.0-4.54.1, 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
webkit2gtk-4_0-injected-bundles-debuginfo - addressed in versions 2.52.0-4.54.1, 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
libwebkit2gtk3-lang - update to 2.52.0-4.54.1
webkit2gtk3-devel - addressed in versions 2.52.0-4.54.1, 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
libwebkit2gtk-4_0-37 - addressed in versions 2.52.0-4.54.1, 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
typelib-1_0-WebKit2-4_0 - addressed in versions 2.52.0-4.54.1, 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
webkit2gtk-4_0-injected-bundles - addressed in versions 2.52.0-4.54.1, 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
libjavascriptcoregtk-4_0-18 - addressed in versions 2.52.0-4.54.1, 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
webkit2gtk3-debugsource - addressed in versions 2.52.0-4.54.1, 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
typelib-1_0-JavaScriptCore-4_0 - addressed in versions 2.52.0-4.54.1, 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
libjavascriptcoregtk-4_0-18-debuginfo - addressed in versions 2.52.0-4.54.1, 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
libwebkit2gtk-4_0-37-debuginfo - addressed in versions 2.52.0-4.54.1, 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
libjavascriptcoregtk-4_1-0-debuginfo - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
webkit2gtk3-soup2-minibrowser - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
libwebkitgtk-6_0-4 - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
typelib-1_0-WebKit2-4_1 - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
libwebkitgtk-6_0-4-debuginfo - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
webkit2gtk4-minibrowser-debuginfo - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
webkit2gtk-4_1-injected-bundles - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
webkit2gtk3-soup2-debugsource - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
webkit2gtk3-soup2-minibrowser-debuginfo - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
webkit-jsc-4 - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
libwebkit2gtk-4_1-0 - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
libjavascriptcoregtk-4_1-0 - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
typelib-1_0-WebKit-6_0 - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
webkit-jsc-4.1 - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
webkit2gtk4-devel - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
webkitgtk-6_0-injected-bundles - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
webkit2gtk-4_1-injected-bundles-debuginfo - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
libjavascriptcoregtk-4_1-0-32bit - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
libwebkit2gtk-4_1-0-32bit-debuginfo - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
libjavascriptcoregtk-4_1-0-32bit-debuginfo - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
libwebkit2gtk-4_1-0-32bit - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
libwebkit2gtk-4_0-37-32bit-debuginfo - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
libjavascriptcoregtk-4_0-18-32bit-debuginfo - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
libjavascriptcoregtk-4_0-18-32bit - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
libwebkit2gtk-4_0-37-32bit - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
libwebkit2gtk-4_1-0-64bit - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
libjavascriptcoregtk-4_0-18-64bit - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
typelib-1_0-JavaScriptCore-6_0 - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
libwebkit2gtk-4_0-37-64bit - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
libjavascriptcoregtk-4_1-0-64bit - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
libwebkit2gtk-4_1-0-64bit-debuginfo - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
libwebkit2gtk-4_0-37-64bit-debuginfo - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
libjavascriptcoregtk-4_0-18-64bit-debuginfo - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
libjavascriptcoregtk-4_1-0-64bit-debuginfo - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
WebKitGTK-4.1-lang - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
WebKitGTK-4.0-lang - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
WebKitGTK-6.0-lang - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
webkitgtk-6_0-injected-bundles-debuginfo - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
webkit-jsc-4-debuginfo - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
libjavascriptcoregtk-6_0-1 - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
webkit-jsc-6.0 - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
typelib-1_0-JavaScriptCore-4_1 - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
webkit2gtk3-minibrowser-debuginfo - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
webkit2gtk4-minibrowser - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
webkit2gtk3-minibrowser - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
webkit2gtk3-soup2-devel - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
webkit-jsc-4.1-debuginfo - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
typelib-1_0-WebKitWebProcessExtension-6_0 - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
webkit2gtk4-debugsource - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
typelib-1_0-WebKit2WebExtension-4_1 - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
libjavascriptcoregtk-6_0-1-debuginfo - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
webkit-jsc-6.0-debuginfo - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
libwebkit2gtk-4_1-0-debuginfo - addressed in versions 2.52.0-150400.4.137.3, 2.52.1-150600.12.63.1
webkit2gtk (Debian package) - update to 2.52.1-1~deb13u1
webkit2gtk3 (Red Hat package) - addressed in versions 2.52.3-0.el9_7.1, 2.52.3-1.el8_4, 2.52.3-1.el8_6, 2.52.3-1.el8_8, 2.52.3-1.el8_10, 2.52.3-1.el9_0, 2.52.3-1.el9_2, 2.52.3-1.el9_4, 2.52.3-1.el9_6
webkit2gtk (Ubuntu package) - addressed in versions 2.52.3-0ubuntu0.24.04.1, 2.52.3-0ubuntu0.25.10.1, 2.52.3-0ubuntu0.26.04.2
webkitgtk4 (Red Hat package) - update to 2.52.3-1.el7_9
webkit2gtk3 - update to 2.52.3-1.0.1
webkit2gtk3-devel - update to 2.52.3-1.0.1
webkit2gtk3-jsc - update to 2.52.3-1.0.1
webkit2gtk3-jsc-devel - update to 2.52.3-1.0.1

• https://support.apple.com/en-us/125886
• https://webkitgtk.org/security/WSA-2026-0001.html

• Two vulnerabilities in WebKitGTK+ and WPE WebKit
• Multiple vulnerabilities in Apple macOS Tahoe
• Multiple vulnerabilities in Apple tvOS
• Multiple vulnerabilities in Safari
• Multiple vulnerabilities in Apple visionOS
• Multiple vulnerabilities in Apple iOS 26 and iPadOS 26
• Multiple vulnerabilities in Apple watchOS
• Fedora 43 update for webkitgtk
• Fedora 44 update for webkitgtk
• Fedora 42 update for webkitgtk
• Fedora 44 update for webkitgtk
• SUSE update for webkit2gtk3
• Anolis OS update for webkitgtk
• SUSE update for webkit2gtk3
• SUSE update for webkit2gtk3
• Red Hat Enterprise Linux 9 update for webkit2gtk3
• Red Hat Enterprise Linux 8 update for webkit2gtk3
• Red Hat Enterprise Linux 9 update for webkit2gtk3
• Red Hat Enterprise Linux 8 update for webkit2gtk3
• Red Hat Enterprise Linux 8 update for webkit2gtk3
• Red Hat Enterprise Linux 9 update for webkit2gtk3
• Ubuntu update for webkit2gtk
• Anolis OS update for webkit2gtk3
• Red Hat Enterprise Linux 8 update for webkit2gtk3
• Red Hat Enterprise Linux 9 update for webkit2gtk3
• Debian update for webkit2gtk
• Red Hat Enterprise Linux 9 update for webkit2gtk3
• Red Hat Enterprise Linux 7 Extended Lifecycle Support update for webkitgtk4