Origin Validation Error Affecting wpe_webkit package, versions [,2.52.1)
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-WPEWEBKIT-17391810
- published21 Jun 2026
- disclosed28 Mar 2026
- creditHongze Wu, Shuaike Dong
Introduced: 28 Mar 2026
CVE-2026-28861 (opens in a new tab)How to fix?
Upgrade wpe_webkit to version 2.52.1 or higher.
Overview
wpe_webkit is a None
Affected versions of this package are vulnerable to Origin Validation Error.
in the state management process. An attacker can gain unauthorized access to script message handlers intended for other origins by tricking a user into visiting a maliciously crafted web page. This is only exploitable if the system is configured with packages that require WebKitGTK4 (such as evolution-data-server, glade, gnome-boxes, gnome-initial-setup, gnome-online-accounts, gnome-shell, shotwell, sushi, or yelp) and these are used via a graphical interface to process untrusted web content, for example through GNOME. In gnome-shell, exploitation can occur from the local network without user interaction.
Workaround
This vulnerability can be mitigated by removing packages that require WebKitGTK4 or by avoiding the use of graphical interfaces to process untrusted web content. Additionally, WebKitGTK3 can be removed without consequences or loss of functionality.