Detections
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Oracle Linux 10 : xorg-x11-server-Xwayland (ELSA-2026-26566)

high Nessus Plugin ID 327508

Synopsis

The remote Oracle Linux host is missing one or more security updates.

Description

The remote Oracle Linux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2026-26566 advisory.

 - CVE fix for: CVE-2026-50256, CVE-2026-50257, CVE-2026-50258, CVE-2026-50259, CVE-2026-50260, CVE-2026-50261, CVE-2026-50262, CVE-2026-50263 Resolves: https://redhat.atlassian.net/browse/RHEL-182443
 - CVE fix for: CVE-2026-33999, CVE-2026-34000, CVE-2026-34001 CVE-2026-34002, CVE-2026-34003 Resolves: https://redhat.atlassian.net/browse/RHEL-163189 Resolves: https://redhat.atlassian.net/browse/RHEL-163285 Resolves: https://redhat.atlassian.net/browse/RHEL-163243

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the affected xorg-x11-server-Xwayland and / or xorg-x11-server-Xwayland-devel packages.

See Also

https://linux.oracle.com/errata/ELSA-2026-26566.html

Plugin Details

Severity: High

ID: 327508

File Name: oraclelinux_ELSA-2026-26566.nasl

Version: 1.1

Type: Local

Agent: unix

Published: 7/17/2026

Updated: 7/17/2026

Supported Sensors: Continuous Assessment, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 57.98

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

Vector: CVSS2#AV:L/AC:L/Au:S/C:C/I:C/A:C

CVSS Score Source: CVE-2026-50264

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.8

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:oracle:linux:xorg-x11-server-xwayland, p-cpe:/a:oracle:linux:xorg-x11-server-xwayland-devel, cpe:/o:oracle:linux:10

Required KB Items: Host/OracleLinux, Host/RedHat/release, Host/RedHat/rpm-list, Host/local_checks_enabled

Exploit Ease: No known exploits are available

Patch Publication Date: 7/16/2026

Vulnerability Publication Date: 6/1/2026

Reference Information

CVE: CVE-2026-50256, CVE-2026-50257, CVE-2026-50258, CVE-2026-50259, CVE-2026-50260, CVE-2026-50261, CVE-2026-50262, CVE-2026-50263, CVE-2026-50264