WebKitGTK and WPE WebKit Security Advisory WSA-2025-0006

[Adrian Perez de Castro <aperez () igalia com>]

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WebKitGTK and WPE WebKit Security Advisory                 WSA-2025-0006
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Date reported           : September 23, 2025
Advisory ID             : WSA-2025-0006
WebKitGTK Advisory URL  : https://webkitgtk.org/security/WSA-2025-0006.html
WPE WebKit Advisory URL : https://wpewebkit.org/security/WSA-2025-0006.html
CVE identifiers         : CVE-2025-43272, CVE-2025-43342,
                          CVE-2025-43356, CVE-2025-43368.

Several vulnerabilities were discovered in WebKitGTK and WPE WebKit.

CVE-2025-43272
    Versions affected: WebKitGTK and WPE WebKit before 2.48.7.
    Credit to Big Bear.
    Impact: Processing maliciously crafted web content may lead to an
    unexpected Safari crash. Description: The issue was addressed with
    improved memory handling.
    WebKit Bugzilla: 294550

CVE-2025-43342
    Versions affected: WebKitGTK and WPE WebKit before 2.48.7.
    Credit to an anonymous researcher.
    Impact: Processing maliciously crafted web content may lead to an
    unexpected process crash. Description: A correctness issue was
    addressed with improved checks.
    WebKit Bugzilla: 296042

CVE-2025-43356
    Versions affected: WebKitGTK and WPE WebKit before 2.48.7.
    Credit to Jaydev Ahire.
    Impact: A website may be able to access sensor information without
    user consent. Description: The issue was addressed with improved
    handling of caches.
    WebKit Bugzilla: 296153

CVE-2025-43368
    Versions affected: WebKitGTK and WPE WebKit before 2.48.7.
    Credit to Pawel Wylecial of REDTEAM.PL working with Trend Micro Zero Day
    Initiative.
    Impact: Processing maliciously crafted web content may lead to an
    unexpected Safari crash. Description: A use-after-free issue was
    addressed with improved memory management.
    WebKit Bugzilla: 296276

We recommend updating to the latest stable versions of WebKitGTK and WPE
WebKit. It is the best way to ensure that you are running safe versions
of WebKit. Please check our websites for information about the latest
stable releases.

Further information about WebKitGTK and WPE WebKit security advisories
can be found at: https://webkitgtk.org/security.html or
https://wpewebkit.org/security.

The WebKitGTK and WPE WebKit team,

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