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Debian 11: webkit2gtk Important App Crash Issues DLA-4399-1

debian lts
Calendar Grey December 10, 2025
Dist Debian Esm H88
Discover critical updates for webkit2gtk in Debian due to vulnerabilities that may lead to data exfiltration and crashes.
The following vulnerabilities have been discovered in the WebKitGTK web engine: CVE-2025-13947
Topics%20covered

Topics Covered

security advisory debian important webkit2gtk process crash system information

Summary

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/source-package/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


Severity
important
Lowest
Low
Medium
High
Critical

Package: webkit2gtk
Version: 2.50.3-1~deb11u1
CVE ID: CVE-2025-13947 CVE-2025-43421 CVE-2025-43458 CVE-2025-66287

Topics%20covered

Topics Covered

security advisory debian important webkit2gtk process crash system information

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