A use-after-free vulnerability has been identified in WebKitGTK, a web content rendering engine. The flaw arises from improper memory handling when processing malicious web content. Exploitation of this vulnerability can lead to memory corruption, potentially enabling arbitrary code execution or application crashes. The issue is tracked as CVE-2026-78376 and has been acknowledged by Red Hat. A fix has been proposed via a pull request in the upstream WebKit GitHub repository. Users of systems relying on WebKitGTK are advised to apply patches as they become available. The vulnerability is rated high severity given its potential for memory corruption through web-based attack vectors.
