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Debian LTS Advisory DLA-4399-1 [email protected]
https://www.debian.org/lts/security/ Emilio Pozuelo Monfort
December 10, 2025 https://wiki.debian.org/LTS
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Package : webkit2gtk
Version : 2.50.3-1~deb11u1
CVE ID : CVE-2025-13947 CVE-2025-43421 CVE-2025-43458 CVE-2025-66287
The following vulnerabilities have been discovered in the WebKitGTK
web engine:
CVE-2025-13947
Janet Black discovered that a website may be able to exfiltrate
sensitive system information.
CVE-2025-43421
Nan Wang discovered that processing maliciously crafted web
content may lead to an unexpected process crash.
CVE-2025-43458
Phil Beauvoir discovered that processing maliciously crafted web
content may lead to an unexpected process crash.
CVE-2025-66287
Stanislav Fort discovered that processing maliciously crafted web
content may lead to an unexpected process crash.
For Debian 11 bullseye, these problems have been fixed in version
2.50.3-1~deb11u1.
We recommend that you upgrade your webkit2gtk packages.
For the detailed security status of webkit2gtk please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/webkit2gtk
Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS
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