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RHSA-2026:38487
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Source
https://access.redhat.com/errata/RHSA-2026:38487
Import Source
https://security.access.redhat.com/data/osv/RHSA-2026:38487.json
JSON Data
https://api.test.osv.dev/v1/vulns/RHSA-2026:38487
Upstream
CVE-2026-55999
Published
2026-07-13T10:07:38Z
Modified
2026-07-14T10:08:56Z
Severity
7.5 (High)
CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS Calculator
Summary
Red Hat Security Advisory: xorg-x11-server security update
Details
References
https://access.redhat.com/errata/RHSA-2026:38487
https://access.redhat.com/security/updates/classification/#important
https://bugzilla.redhat.com/show_bug.cgi?id=2496165
https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_38487.json
https://access.redhat.com/security/cve/CVE-2026-55999
https://www.cve.org/CVERecord?id=CVE-2026-55999
https://nvd.nist.gov/vuln/detail/CVE-2026-55999
Affected packages
Red Hat:enterprise_linux:8::appstream
xorg-x11-server
Package
Name
xorg-x11-server
Purl
pkg:rpm/redhat/xorg-x11-server
Affected ranges
Type
ECOSYSTEM
Events
Introduced
0
Unknown introduced version / All previous versions are affected
Fixed
0:1.20.11-28.el8_10.3
Database specific
source
"https://security.access.redhat.com/data/osv/RHSA-2026:38487.json"
xorg-x11-server-Xdmx
Package
Name
xorg-x11-server-Xdmx
Purl
pkg:rpm/redhat/xorg-x11-server-Xdmx
Affected ranges
Type
ECOSYSTEM
Events
Introduced
0
Unknown introduced version / All previous versions are affected
Fixed
0:1.20.11-28.el8_10.3
Database specific
source
"https://security.access.redhat.com/data/osv/RHSA-2026:38487.json"
xorg-x11-server-Xdmx-debuginfo
Package
Name
xorg-x11-server-Xdmx-debuginfo
Purl
pkg:rpm/redhat/xorg-x11-server-Xdmx-debuginfo
Affected ranges
Type
ECOSYSTEM
Events
Introduced
0
Unknown introduced version / All previous versions are affected
Fixed
0:1.20.11-28.el8_10.3
Database specific
source
"https://security.access.redhat.com/data/osv/RHSA-2026:38487.json"
xorg-x11-server-Xephyr
Package
Name
xorg-x11-server-Xephyr
Purl
pkg:rpm/redhat/xorg-x11-server-Xephyr
Affected ranges
Type
ECOSYSTEM
Events
Introduced
0
Unknown introduced version / All previous versions are affected
Fixed
0:1.20.11-28.el8_10.3
Database specific
source
"https://security.access.redhat.com/data/osv/RHSA-2026:38487.json"
xorg-x11-server-Xephyr-debuginfo
Package
Name
xorg-x11-server-Xephyr-debuginfo
Purl
pkg:rpm/redhat/xorg-x11-server-Xephyr-debuginfo
Affected ranges
Type
ECOSYSTEM
Events
Introduced
0
Unknown introduced version / All previous versions are affected
Fixed
0:1.20.11-28.el8_10.3
Database specific
source
"https://security.access.redhat.com/data/osv/RHSA-2026:38487.json"
xorg-x11-server-Xnest
Package
Name
xorg-x11-server-Xnest
Purl
pkg:rpm/redhat/xorg-x11-server-Xnest
Affected ranges
Type
ECOSYSTEM
Events
Introduced
0
Unknown introduced version / All previous versions are affected
Fixed
0:1.20.11-28.el8_10.3
Database specific
source
"https://security.access.redhat.com/data/osv/RHSA-2026:38487.json"
xorg-x11-server-Xnest-debuginfo
Package
Name
xorg-x11-server-Xnest-debuginfo
Purl
pkg:rpm/redhat/xorg-x11-server-Xnest-debuginfo
Affected ranges
Type
ECOSYSTEM
Events
Introduced
0
Unknown introduced version / All previous versions are affected
Fixed
0:1.20.11-28.el8_10.3
Database specific
source
"https://security.access.redhat.com/data/osv/RHSA-2026:38487.json"
xorg-x11-server-Xorg
Package
Name
xorg-x11-server-Xorg
Purl
pkg:rpm/redhat/xorg-x11-server-Xorg
Affected ranges
Type
ECOSYSTEM
Events
Introduced
0
Unknown introduced version / All previous versions are affected
Fixed
0:1.20.11-28.el8_10.3
Database specific
source
"https://security.access.redhat.com/data/osv/RHSA-2026:38487.json"
xorg-x11-server-Xorg-debuginfo
Package
Name
xorg-x11-server-Xorg-debuginfo
Purl
pkg:rpm/redhat/xorg-x11-server-Xorg-debuginfo
Affected ranges
Type
ECOSYSTEM
Events
Introduced
0
Unknown introduced version / All previous versions are affected
Fixed
0:1.20.11-28.el8_10.3
Database specific
source
"https://security.access.redhat.com/data/osv/RHSA-2026:38487.json"
xorg-x11-server-Xvfb
Package
Name
xorg-x11-server-Xvfb
Purl
pkg:rpm/redhat/xorg-x11-server-Xvfb
Affected ranges
Type
ECOSYSTEM
Events
Introduced
0
Unknown introduced version / All previous versions are affected
Fixed
0:1.20.11-28.el8_10.3
Database specific
source
"https://security.access.redhat.com/data/osv/RHSA-2026:38487.json"
xorg-x11-server-Xvfb-debuginfo
Package
Name
xorg-x11-server-Xvfb-debuginfo
Purl
pkg:rpm/redhat/xorg-x11-server-Xvfb-debuginfo
Affected ranges
Type
ECOSYSTEM
Events
Introduced
0
Unknown introduced version / All previous versions are affected
Fixed
0:1.20.11-28.el8_10.3
Database specific
source
"https://security.access.redhat.com/data/osv/RHSA-2026:38487.json"
xorg-x11-server-common
Package
Name
xorg-x11-server-common
Purl
pkg:rpm/redhat/xorg-x11-server-common
Affected ranges
Type
ECOSYSTEM
Events
Introduced
0
Unknown introduced version / All previous versions are affected
Fixed
0:1.20.11-28.el8_10.3
Database specific
source
"https://security.access.redhat.com/data/osv/RHSA-2026:38487.json"
xorg-x11-server-debuginfo
Package
Name
xorg-x11-server-debuginfo
Purl
pkg:rpm/redhat/xorg-x11-server-debuginfo
Affected ranges
Type
ECOSYSTEM
Events
Introduced
0
Unknown introduced version / All previous versions are affected
Fixed
0:1.20.11-28.el8_10.3
Database specific
source
"https://security.access.redhat.com/data/osv/RHSA-2026:38487.json"
xorg-x11-server-debugsource
Package
Name
xorg-x11-server-debugsource
Purl
pkg:rpm/redhat/xorg-x11-server-debugsource
Affected ranges
Type
ECOSYSTEM
Events
Introduced
0
Unknown introduced version / All previous versions are affected
Fixed
0:1.20.11-28.el8_10.3
Database specific
source
"https://security.access.redhat.com/data/osv/RHSA-2026:38487.json"
Red Hat:enterprise_linux:8::crb
xorg-x11-server-Xdmx-debuginfo
Package
Name
xorg-x11-server-Xdmx-debuginfo
Purl
pkg:rpm/redhat/xorg-x11-server-Xdmx-debuginfo
Affected ranges
Type
ECOSYSTEM
Events
Introduced
0
Unknown introduced version / All previous versions are affected
Fixed
0:1.20.11-28.el8_10.3
Database specific
source
"https://security.access.redhat.com/data/osv/RHSA-2026:38487.json"
xorg-x11-server-Xephyr-debuginfo
Package
Name
xorg-x11-server-Xephyr-debuginfo
Purl
pkg:rpm/redhat/xorg-x11-server-Xephyr-debuginfo
Affected ranges
Type
ECOSYSTEM
Events
Introduced
0
Unknown introduced version / All previous versions are affected
Fixed
0:1.20.11-28.el8_10.3
Database specific
source
"https://security.access.redhat.com/data/osv/RHSA-2026:38487.json"
xorg-x11-server-Xnest-debuginfo
Package
Name
xorg-x11-server-Xnest-debuginfo
Purl
pkg:rpm/redhat/xorg-x11-server-Xnest-debuginfo
Affected ranges
Type
ECOSYSTEM
Events
Introduced
0
Unknown introduced version / All previous versions are affected
Fixed
0:1.20.11-28.el8_10.3
Database specific
source
"https://security.access.redhat.com/data/osv/RHSA-2026:38487.json"
xorg-x11-server-Xorg-debuginfo
Package
Name
xorg-x11-server-Xorg-debuginfo
Purl
pkg:rpm/redhat/xorg-x11-server-Xorg-debuginfo
Affected ranges
Type
ECOSYSTEM
Events
Introduced
0
Unknown introduced version / All previous versions are affected
Fixed
0:1.20.11-28.el8_10.3
Database specific
source
"https://security.access.redhat.com/data/osv/RHSA-2026:38487.json"
xorg-x11-server-Xvfb-debuginfo
Package
Name
xorg-x11-server-Xvfb-debuginfo
Purl
pkg:rpm/redhat/xorg-x11-server-Xvfb-debuginfo
Affected ranges
Type
ECOSYSTEM
Events
Introduced
0
Unknown introduced version / All previous versions are affected
Fixed
0:1.20.11-28.el8_10.3
Database specific
source
"https://security.access.redhat.com/data/osv/RHSA-2026:38487.json"
xorg-x11-server-debuginfo
Package
Name
xorg-x11-server-debuginfo
Purl
pkg:rpm/redhat/xorg-x11-server-debuginfo
Affected ranges
Type
ECOSYSTEM
Events
Introduced
0
Unknown introduced version / All previous versions are affected
Fixed
0:1.20.11-28.el8_10.3
Database specific
source
"https://security.access.redhat.com/data/osv/RHSA-2026:38487.json"
xorg-x11-server-debugsource
Package
Name
xorg-x11-server-debugsource
Purl
pkg:rpm/redhat/xorg-x11-server-debugsource
Affected ranges
Type
ECOSYSTEM
Events
Introduced
0
Unknown introduced version / All previous versions are affected
Fixed
0:1.20.11-28.el8_10.3
Database specific
source
"https://security.access.redhat.com/data/osv/RHSA-2026:38487.json"
xorg-x11-server-devel
Package
Name
xorg-x11-server-devel
Purl
pkg:rpm/redhat/xorg-x11-server-devel
Affected ranges
Type
ECOSYSTEM
Events
Introduced
0
Unknown introduced version / All previous versions are affected
Fixed
0:1.20.11-28.el8_10.3
Database specific
source
"https://security.access.redhat.com/data/osv/RHSA-2026:38487.json"
xorg-x11-server-source
Package
Name
xorg-x11-server-source
Purl
pkg:rpm/redhat/xorg-x11-server-source
Affected ranges
Type
ECOSYSTEM
Events
Introduced
0
Unknown introduced version / All previous versions are affected
Fixed
0:1.20.11-28.el8_10.3
Database specific
source
"https://security.access.redhat.com/data/osv/RHSA-2026:38487.json"
RHSA-2026:38487 - OSV