Use After Free Affecting xorg-x11-server-common package, versions *


Severity

Recommended
0.0
medium
0
10

Based on CentOS security rating.

Threat Intelligence

EPSS
0.18% (9th percentile)

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  • Snyk IDSNYK-CENTOS6-XORGX11SERVERCOMMON-17192736
  • published5 Jun 2026
  • disclosed2 Jun 2026

Introduced: 2 Jun 2026

NewCVE-2026-50263  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

There is no fixed version for Centos:6 xorg-x11-server-common.

NVD Description

Note: Versions mentioned in the description apply only to the upstream xorg-x11-server-common package and not the xorg-x11-server-common package as distributed by Centos. See How to fix? for Centos:6 relevant fixed versions and status.

A use-after-free flaw was found in the X.Org X server and Xwayland in CreateSaverWindow(). A client can trigger a use-after-free read after changing window attributes and forcing the screen saver, leading to information disclosure.

CVSS Base Scores

version 3.1