Use After Free Affecting webkitgtk package, versions [,2.50.2)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UNMANAGED-WEBKITGTK-15763359
- published25 Mar 2026
- disclosed18 Mar 2026
- creditUnknown
Introduced: 18 Mar 2026
CVE-2025-43438 (opens in a new tab)How to fix?
Upgrade webkitgtk to version 2.50.2 or higher.
Overview
Affected versions of this package are vulnerable to Use After Free in the memory management process. An attacker can cause an unexpected process crash or potentially execute arbitrary code by tricking a user into processing or loading malicious web content. This is only exploitable if the system has specific packages installed and is being used via a graphical interface to process untrusted web content, such as through GNOME. In certain configurations, exploitation may be possible from the local network without user interaction.
Workaround
This vulnerability can be mitigated by removing the affected packages that require WebKitGTK4 or WebKitGTK3, though this may impact system functionality, especially if GNOME or related packages are removed.