CVE-2026-50263

Name of the Vulnerable Software and Affected Versions X.Org X server (affected versions not specified) Xwayland (affected versions not specified)

Description A use-after-free flaw exists in the CreateSaverWindow() function. A client can trigger a use-after-free read by changing window attributes and forcing the screen saver, which may result in information disclosure. Use-after-free is a condition where a program continues to use a pointer after it has been freed, potentially allowing access to memory that has been repurposed.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.