UBUNTU-CVE-2026-55999

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Source
https://ubuntu.com/security/CVE-2026-55999
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-55999.json
JSON Data
https://api.test.osv.dev/v1/vulns/UBUNTU-CVE-2026-55999
Upstream
Published
2026-07-09T00:00:00Z
Modified
2026-07-11T00:15:13.624182090Z
Severity
  • 8.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H CVSS Calculator
  • 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

(Local attackers with a X connection able to provide PCX fonts to the X ...)

References

Affected packages

Ubuntu:22.04:LTS
xorg-server

Package

Name
xorg-server
Purl
pkg:deb/ubuntu/xorg-server?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

2:1.*
2:1.20.13-1ubuntu1
2:1.20.13-1ubuntu2
2:1.20.14-1ubuntu1
2:21.*
2:21.1.3-2ubuntu2
2:21.1.3-2ubuntu2.1
2:21.1.3-2ubuntu2.2
2:21.1.3-2ubuntu2.3
2:21.1.3-2ubuntu2.4
2:21.1.3-2ubuntu2.5
2:21.1.3-2ubuntu2.6
2:21.1.3-2ubuntu2.7
2:21.1.3-2ubuntu2.8
2:21.1.3-2ubuntu2.9
2:21.1.4-2ubuntu1.7~22.04.1
2:21.1.4-2ubuntu1.7~22.04.2
2:21.1.4-2ubuntu1.7~22.04.5
2:21.1.4-2ubuntu1.7~22.04.7
2:21.1.4-2ubuntu1.7~22.04.8
2:21.1.4-2ubuntu1.7~22.04.9
2:21.1.4-2ubuntu1.7~22.04.10
2:21.1.4-2ubuntu1.7~22.04.11
2:21.1.4-2ubuntu1.7~22.04.12
2:21.1.4-2ubuntu1.7~22.04.13
2:21.1.4-2ubuntu1.7~22.04.14
2:21.1.4-2ubuntu1.7~22.04.15
2:21.1.4-2ubuntu1.7~22.04.16

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "2:21.1.4-2ubuntu1.7~22.04.16",
            "binary_name": "xnest"
        },
        {
            "binary_name": "xorg-server-source",
            "binary_version": "2:21.1.4-2ubuntu1.7~22.04.16"
        },
        {
            "binary_name": "xserver-common",
            "binary_version": "2:21.1.4-2ubuntu1.7~22.04.16"
        },
        {
            "binary_name": "xserver-xephyr",
            "binary_version": "2:21.1.4-2ubuntu1.7~22.04.16"
        },
        {
            "binary_name": "xserver-xorg-core",
            "binary_version": "2:21.1.4-2ubuntu1.7~22.04.16"
        },
        {
            "binary_name": "xserver-xorg-legacy",
            "binary_version": "2:21.1.4-2ubuntu1.7~22.04.16"
        },
        {
            "binary_version": "2:21.1.4-2ubuntu1.7~22.04.16",
            "binary_name": "xvfb"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-55999.json"
xwayland

Package

Name
xwayland
Purl
pkg:deb/ubuntu/xwayland?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

2:21.*
2:21.1.2-0ubuntu1
2:21.1.3-1
2:21.1.3-1ubuntu1
2:21.1.4-1
2:22.*
2:22.1.0-1
2:22.1.1-1
2:22.1.1-1ubuntu0.1
2:22.1.1-1ubuntu0.2
2:22.1.1-1ubuntu0.3
2:22.1.1-1ubuntu0.4
2:22.1.1-1ubuntu0.5
2:22.1.1-1ubuntu0.6
2:22.1.1-1ubuntu0.7
2:22.1.1-1ubuntu0.9
2:22.1.1-1ubuntu0.10
2:22.1.1-1ubuntu0.11
2:22.1.1-1ubuntu0.12
2:22.1.1-1ubuntu0.13
2:22.1.1-1ubuntu0.14
2:22.1.1-1ubuntu0.15
2:22.1.1-1ubuntu0.17
2:22.1.1-1ubuntu0.18
2:22.1.1-1ubuntu0.19
2:22.1.1-1ubuntu0.20

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "xwayland",
            "binary_version": "2:22.1.1-1ubuntu0.20"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-55999.json"
Ubuntu:24.04:LTS
xorg-server

Package

Name
xorg-server
Purl
pkg:deb/ubuntu/xorg-server?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

2:21.*
2:21.1.7-3ubuntu2
2:21.1.7-3ubuntu2.1
2:21.1.10-1ubuntu1
2:21.1.11-2ubuntu1
2:21.1.12-1ubuntu1
2:21.1.12-1ubuntu1.1
2:21.1.12-1ubuntu1.2
2:21.1.12-1ubuntu1.3
2:21.1.12-1ubuntu1.4
2:21.1.12-1ubuntu1.5
2:21.1.12-1ubuntu1.6

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "xnest",
            "binary_version": "2:21.1.12-1ubuntu1.6"
        },
        {
            "binary_name": "xorg-server-source",
            "binary_version": "2:21.1.12-1ubuntu1.6"
        },
        {
            "binary_version": "2:21.1.12-1ubuntu1.6",
            "binary_name": "xserver-common"
        },
        {
            "binary_name": "xserver-xephyr",
            "binary_version": "2:21.1.12-1ubuntu1.6"
        },
        {
            "binary_name": "xserver-xorg-core",
            "binary_version": "2:21.1.12-1ubuntu1.6"
        },
        {
            "binary_name": "xserver-xorg-legacy",
            "binary_version": "2:21.1.12-1ubuntu1.6"
        },
        {
            "binary_name": "xvfb",
            "binary_version": "2:21.1.12-1ubuntu1.6"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-55999.json"
xwayland

Package

Name
xwayland
Purl
pkg:deb/ubuntu/xwayland?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

2:23.*
2:23.2.0-1
2:23.2.0-1ubuntu0.1
2:23.2.3-1
2:23.2.4-1
2:23.2.4-1build1
2:23.2.4-1build2
2:23.2.4-1build3
2:23.2.6-1
2:23.2.6-1ubuntu0.1
2:23.2.6-1ubuntu0.2
2:23.2.6-1ubuntu0.4
2:23.2.6-1ubuntu0.5
2:23.2.6-1ubuntu0.6
2:23.2.6-1ubuntu0.7
2:23.2.6-1ubuntu0.8

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "xwayland",
            "binary_version": "2:23.2.6-1ubuntu0.8"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-55999.json"
Ubuntu:25.10
xorg-server

Package

Name
xorg-server
Purl
pkg:deb/ubuntu/xorg-server?arch=source&distro=questing

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

2:21.*
2:21.1.16-1ubuntu1
2:21.1.18-1ubuntu1
2:21.1.18-1ubuntu1.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "2:21.1.18-1ubuntu1.1",
            "binary_name": "xnest"
        },
        {
            "binary_name": "xorg-server-source",
            "binary_version": "2:21.1.18-1ubuntu1.1"
        },
        {
            "binary_name": "xserver-common",
            "binary_version": "2:21.1.18-1ubuntu1.1"
        },
        {
            "binary_name": "xserver-xephyr",
            "binary_version": "2:21.1.18-1ubuntu1.1"
        },
        {
            "binary_version": "2:21.1.18-1ubuntu1.1",
            "binary_name": "xserver-xorg-core"
        },
        {
            "binary_name": "xserver-xorg-legacy",
            "binary_version": "2:21.1.18-1ubuntu1.1"
        },
        {
            "binary_version": "2:21.1.18-1ubuntu1.1",
            "binary_name": "xvfb"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-55999.json"
xwayland

Package

Name
xwayland
Purl
pkg:deb/ubuntu/xwayland?arch=source&distro=questing

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

2:24.*
2:24.1.6-1
2:24.1.6-1ubuntu1
2:24.1.6-1ubuntu1.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "xwayland",
            "binary_version": "2:24.1.6-1ubuntu1.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-55999.json"
Ubuntu:26.04:LTS
xorg-server

Package

Name
xorg-server
Purl
pkg:deb/ubuntu/xorg-server?arch=source&distro=resolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

2:21.*
2:21.1.18-1ubuntu1
2:21.1.21-1ubuntu1
2:21.1.22-1ubuntu1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "xnest",
            "binary_version": "2:21.1.22-1ubuntu1"
        },
        {
            "binary_name": "xorg-server-source",
            "binary_version": "2:21.1.22-1ubuntu1"
        },
        {
            "binary_name": "xserver-common",
            "binary_version": "2:21.1.22-1ubuntu1"
        },
        {
            "binary_name": "xserver-xephyr",
            "binary_version": "2:21.1.22-1ubuntu1"
        },
        {
            "binary_name": "xserver-xorg-core",
            "binary_version": "2:21.1.22-1ubuntu1"
        },
        {
            "binary_name": "xserver-xorg-legacy",
            "binary_version": "2:21.1.22-1ubuntu1"
        },
        {
            "binary_name": "xvfb",
            "binary_version": "2:21.1.22-1ubuntu1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-55999.json"
xwayland

Package

Name
xwayland
Purl
pkg:deb/ubuntu/xwayland?arch=source&distro=resolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

2:24.*
2:24.1.6-1ubuntu1
2:24.1.8-1
2:24.1.9-1
2:24.1.10-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "xwayland",
            "binary_version": "2:24.1.10-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-55999.json"
Ubuntu:Pro:14.04:LTS
xorg-server

Package

Name
xorg-server
Purl
pkg:deb/ubuntu/xorg-server?arch=source&distro=esm-infra-legacy%2Ftrusty

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

2:1.*
2:1.14.3-3ubuntu2
2:1.14.3-3ubuntu3
2:1.14.3-3ubuntu4
2:1.14.3-5ubuntu1
2:1.14.4-1ubuntu1
2:1.14.4-1ubuntu2
2:1.14.4.901-0ubuntu2
2:1.14.5-1ubuntu2
2:1.14.5-1ubuntu4
2:1.15.0-1ubuntu1
2:1.15.0-1ubuntu2
2:1.15.0-1ubuntu3
2:1.15.0-1ubuntu4
2:1.15.0-1ubuntu6
2:1.15.0-1ubuntu7
2:1.15.1-0ubuntu1
2:1.15.1-0ubuntu2
2:1.15.1-0ubuntu2.1
2:1.15.1-0ubuntu2.4
2:1.15.1-0ubuntu2.5
2:1.15.1-0ubuntu2.6
2:1.15.1-0ubuntu2.7
2:1.15.1-0ubuntu2.9
2:1.15.1-0ubuntu2.10
2:1.15.1-0ubuntu2.11
2:1.15.1-0ubuntu2.11+esm2
2:1.15.1-0ubuntu2.11+esm3
2:1.15.1-0ubuntu2.11+esm4
2:1.15.1-0ubuntu2.11+esm5
2:1.15.1-0ubuntu2.11+esm6
2:1.15.1-0ubuntu2.11+esm7
2:1.15.1-0ubuntu2.11+esm8
2:1.15.1-0ubuntu2.11+esm9
2:1.15.1-0ubuntu2.11+esm11
2:1.15.1-0ubuntu2.11+esm12

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "2:1.15.1-0ubuntu2.11+esm12",
            "binary_name": "xdmx"
        },
        {
            "binary_version": "2:1.15.1-0ubuntu2.11+esm12",
            "binary_name": "xdmx-tools"
        },
        {
            "binary_name": "xnest",
            "binary_version": "2:1.15.1-0ubuntu2.11+esm12"
        },
        {
            "binary_name": "xorg-server-source",
            "binary_version": "2:1.15.1-0ubuntu2.11+esm12"
        },
        {
            "binary_name": "xserver-common",
            "binary_version": "2:1.15.1-0ubuntu2.11+esm12"
        },
        {
            "binary_name": "xserver-xephyr",
            "binary_version": "2:1.15.1-0ubuntu2.11+esm12"
        },
        {
            "binary_name": "xserver-xorg-core",
            "binary_version": "2:1.15.1-0ubuntu2.11+esm12"
        },
        {
            "binary_name": "xserver-xorg-xmir",
            "binary_version": "2:1.15.1-0ubuntu2.11+esm12"
        },
        {
            "binary_version": "2:1.15.1-0ubuntu2.11+esm12",
            "binary_name": "xvfb"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-55999.json"
Ubuntu:Pro:16.04:LTS
xorg-server

Package

Name
xorg-server
Purl
pkg:deb/ubuntu/xorg-server?arch=source&distro=esm-infra%2Fxenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

2:1.*
2:1.17.2-1ubuntu9
2:1.17.2-1ubuntu10
2:1.17.3-2ubuntu1
2:1.17.3-2ubuntu2
2:1.17.3-2ubuntu3
2:1.17.3-2ubuntu4
2:1.18.1-1ubuntu3
2:1.18.1-1ubuntu4
2:1.18.3-1ubuntu1
2:1.18.3-1ubuntu2
2:1.18.3-1ubuntu2.2
2:1.18.3-1ubuntu2.3
2:1.18.4-0ubuntu0.1
2:1.18.4-0ubuntu0.2
2:1.18.4-0ubuntu0.3
2:1.18.4-0ubuntu0.4
2:1.18.4-0ubuntu0.6
2:1.18.4-0ubuntu0.7
2:1.18.4-0ubuntu0.8
2:1.18.4-0ubuntu0.9
2:1.18.4-0ubuntu0.10
2:1.18.4-0ubuntu0.11
2:1.18.4-0ubuntu0.12
2:1.18.4-0ubuntu0.12+esm1
2:1.18.4-0ubuntu0.12+esm2
2:1.18.4-0ubuntu0.12+esm4
2:1.18.4-0ubuntu0.12+esm5
2:1.18.4-0ubuntu0.12+esm6
2:1.18.4-0ubuntu0.12+esm8
2:1.18.4-0ubuntu0.12+esm9
2:1.18.4-0ubuntu0.12+esm10
2:1.18.4-0ubuntu0.12+esm12
2:1.18.4-0ubuntu0.12+esm13
2:1.18.4-0ubuntu0.12+esm14
2:1.18.4-0ubuntu0.12+esm15
2:1.18.4-0ubuntu0.12+esm16
2:1.18.4-0ubuntu0.12+esm17
2:1.18.4-0ubuntu0.12+esm18

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "2:1.18.4-0ubuntu0.12+esm18",
            "binary_name": "xdmx"
        },
        {
            "binary_name": "xdmx-tools",
            "binary_version": "2:1.18.4-0ubuntu0.12+esm18"
        },
        {
            "binary_version": "2:1.18.4-0ubuntu0.12+esm18",
            "binary_name": "xmir"
        },
        {
            "binary_version": "2:1.18.4-0ubuntu0.12+esm18",
            "binary_name": "xnest"
        },
        {
            "binary_name": "xorg-server-source",
            "binary_version": "2:1.18.4-0ubuntu0.12+esm18"
        },
        {
            "binary_name": "xserver-common",
            "binary_version": "2:1.18.4-0ubuntu0.12+esm18"
        },
        {
            "binary_name": "xserver-xephyr",
            "binary_version": "2:1.18.4-0ubuntu0.12+esm18"
        },
        {
            "binary_name": "xserver-xorg-core",
            "binary_version": "2:1.18.4-0ubuntu0.12+esm18"
        },
        {
            "binary_version": "2:1.18.4-0ubuntu0.12+esm18",
            "binary_name": "xserver-xorg-legacy"
        },
        {
            "binary_version": "2:1.18.4-0ubuntu0.12+esm18",
            "binary_name": "xserver-xorg-xmir"
        },
        {
            "binary_version": "2:1.18.4-0ubuntu0.12+esm18",
            "binary_name": "xvfb"
        },
        {
            "binary_version": "2:1.18.4-0ubuntu0.12+esm18",
            "binary_name": "xwayland"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-55999.json"
xorg-server-hwe-16.04

Package

Name
xorg-server-hwe-16.04
Purl
pkg:deb/ubuntu/xorg-server-hwe-16.04?arch=source&distro=esm-infra%2Fxenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

2:1.*
2:1.18.4-1ubuntu6.1~16.04.1
2:1.18.4-1ubuntu6.1~16.04.2
2:1.19.3-1ubuntu1~16.04.2
2:1.19.3-1ubuntu1~16.04.3
2:1.19.3-1ubuntu1~16.04.4
2:1.19.5-0ubuntu2~16.04.1
2:1.19.6-1ubuntu4~16.04.1
2:1.19.6-1ubuntu4.1~16.04.1
2:1.19.6-1ubuntu4.1~16.04.2
2:1.19.6-1ubuntu4.1~16.04.3
2:1.19.6-1ubuntu4.1~16.04.4
2:1.19.6-1ubuntu4.1~16.04.5
2:1.19.6-1ubuntu4.1~16.04.6
2:1.19.6-1ubuntu4.1~16.04.6+esm1
2:1.19.6-1ubuntu4.1~16.04.6+esm3
2:1.19.6-1ubuntu4.1~16.04.6+esm4
2:1.19.6-1ubuntu4.1~16.04.6+esm5
2:1.19.6-1ubuntu4.1~16.04.6+esm6
2:1.19.6-1ubuntu4.1~16.04.6+esm7
2:1.19.6-1ubuntu4.1~16.04.6+esm8
2:1.19.6-1ubuntu4.1~16.04.6+esm9
2:1.19.6-1ubuntu4.1~16.04.6+esm10

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "xmir-hwe-16.04",
            "binary_version": "2:1.19.6-1ubuntu4.1~16.04.6+esm10"
        },
        {
            "binary_version": "2:1.19.6-1ubuntu4.1~16.04.6+esm10",
            "binary_name": "xorg-server-source-hwe-16.04"
        },
        {
            "binary_name": "xserver-xephyr-hwe-16.04",
            "binary_version": "2:1.19.6-1ubuntu4.1~16.04.6+esm10"
        },
        {
            "binary_name": "xserver-xorg-core-hwe-16.04",
            "binary_version": "2:1.19.6-1ubuntu4.1~16.04.6+esm10"
        },
        {
            "binary_name": "xserver-xorg-dev-hwe-16.04",
            "binary_version": "2:1.19.6-1ubuntu4.1~16.04.6+esm10"
        },
        {
            "binary_name": "xserver-xorg-legacy-hwe-16.04",
            "binary_version": "2:1.19.6-1ubuntu4.1~16.04.6+esm10"
        },
        {
            "binary_name": "xwayland-hwe-16.04",
            "binary_version": "2:1.19.6-1ubuntu4.1~16.04.6+esm10"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-55999.json"
Ubuntu:Pro:18.04:LTS
xorg-server

Package

Name
xorg-server
Purl
pkg:deb/ubuntu/xorg-server?arch=source&distro=esm-infra%2Fbionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

2:1.*
2:1.19.5-0ubuntu2
2:1.19.6-1ubuntu1
2:1.19.6-1ubuntu2
2:1.19.6-1ubuntu3
2:1.19.6-1ubuntu4
2:1.19.6-1ubuntu4.1
2:1.19.6-1ubuntu4.2
2:1.19.6-1ubuntu4.3
2:1.19.6-1ubuntu4.4
2:1.19.6-1ubuntu4.5
2:1.19.6-1ubuntu4.6
2:1.19.6-1ubuntu4.7
2:1.19.6-1ubuntu4.8
2:1.19.6-1ubuntu4.9
2:1.19.6-1ubuntu4.10
2:1.19.6-1ubuntu4.11
2:1.19.6-1ubuntu4.12
2:1.19.6-1ubuntu4.13
2:1.19.6-1ubuntu4.14
2:1.19.6-1ubuntu4.15
2:1.19.6-1ubuntu4.15+esm1
2:1.19.6-1ubuntu4.15+esm3
2:1.19.6-1ubuntu4.15+esm4
2:1.19.6-1ubuntu4.15+esm5
2:1.19.6-1ubuntu4.15+esm7
2:1.19.6-1ubuntu4.15+esm8
2:1.19.6-1ubuntu4.15+esm9
2:1.19.6-1ubuntu4.15+esm10
2:1.19.6-1ubuntu4.15+esm11
2:1.19.6-1ubuntu4.15+esm12
2:1.19.6-1ubuntu4.15+esm13

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "xdmx",
            "binary_version": "2:1.19.6-1ubuntu4.15+esm13"
        },
        {
            "binary_name": "xdmx-tools",
            "binary_version": "2:1.19.6-1ubuntu4.15+esm13"
        },
        {
            "binary_name": "xmir",
            "binary_version": "2:1.19.6-1ubuntu4.15+esm13"
        },
        {
            "binary_version": "2:1.19.6-1ubuntu4.15+esm13",
            "binary_name": "xnest"
        },
        {
            "binary_version": "2:1.19.6-1ubuntu4.15+esm13",
            "binary_name": "xorg-server-source"
        },
        {
            "binary_version": "2:1.19.6-1ubuntu4.15+esm13",
            "binary_name": "xserver-common"
        },
        {
            "binary_name": "xserver-xephyr",
            "binary_version": "2:1.19.6-1ubuntu4.15+esm13"
        },
        {
            "binary_version": "2:1.19.6-1ubuntu4.15+esm13",
            "binary_name": "xserver-xorg-core"
        },
        {
            "binary_name": "xserver-xorg-legacy",
            "binary_version": "2:1.19.6-1ubuntu4.15+esm13"
        },
        {
            "binary_name": "xserver-xorg-xmir",
            "binary_version": "2:1.19.6-1ubuntu4.15+esm13"
        },
        {
            "binary_name": "xvfb",
            "binary_version": "2:1.19.6-1ubuntu4.15+esm13"
        },
        {
            "binary_name": "xwayland",
            "binary_version": "2:1.19.6-1ubuntu4.15+esm13"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-55999.json"
xorg-server-hwe-18.04

Package

Name
xorg-server-hwe-18.04
Purl
pkg:deb/ubuntu/xorg-server-hwe-18.04?arch=source&distro=esm-infra%2Fbionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

2:1.*
2:1.20.1-3ubuntu2.1~18.04.1
2:1.20.4-1ubuntu3~18.04.1
2:1.20.5+git20191008-0ubuntu1~18.04.1
2:1.20.8-2ubuntu2.1~18.04.1
2:1.20.8-2ubuntu2.2~18.04.1
2:1.20.8-2ubuntu2.2~18.04.2
2:1.20.8-2ubuntu2.2~18.04.3
2:1.20.8-2ubuntu2.2~18.04.4
2:1.20.8-2ubuntu2.2~18.04.5
2:1.20.8-2ubuntu2.2~18.04.6
2:1.20.8-2ubuntu2.2~18.04.7
2:1.20.8-2ubuntu2.2~18.04.8
2:1.20.8-2ubuntu2.2~18.04.9
2:1.20.8-2ubuntu2.2~18.04.10
2:1.20.8-2ubuntu2.2~18.04.11
2:1.20.8-2ubuntu2.2~18.04.11+esm1
2:1.20.8-2ubuntu2.2~18.04.11+esm2
2:1.20.8-2ubuntu2.2~18.04.11+esm3
2:1.20.8-2ubuntu2.2~18.04.11+esm4
2:1.20.8-2ubuntu2.2~18.04.11+esm5

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "xorg-server-source-hwe-18.04",
            "binary_version": "2:1.20.8-2ubuntu2.2~18.04.11+esm5"
        },
        {
            "binary_name": "xserver-xephyr-hwe-18.04",
            "binary_version": "2:1.20.8-2ubuntu2.2~18.04.11+esm5"
        },
        {
            "binary_version": "2:1.20.8-2ubuntu2.2~18.04.11+esm5",
            "binary_name": "xserver-xorg-core-hwe-18.04"
        },
        {
            "binary_version": "2:1.20.8-2ubuntu2.2~18.04.11+esm5",
            "binary_name": "xserver-xorg-dev-hwe-18.04"
        },
        {
            "binary_version": "2:1.20.8-2ubuntu2.2~18.04.11+esm5",
            "binary_name": "xserver-xorg-legacy-hwe-18.04"
        },
        {
            "binary_version": "2:1.20.8-2ubuntu2.2~18.04.11+esm5",
            "binary_name": "xwayland-hwe-18.04"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-55999.json"
Ubuntu:Pro:20.04:LTS
xorg-server

Package

Name
xorg-server
Purl
pkg:deb/ubuntu/xorg-server?arch=source&distro=esm-infra%2Ffocal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

2:1.*
2:1.20.5+git20191008-0ubuntu1
2:1.20.6-1ubuntu1
2:1.20.7-2ubuntu1
2:1.20.7-2ubuntu2
2:1.20.8-2ubuntu2
2:1.20.8-2ubuntu2.1
2:1.20.8-2ubuntu2.2
2:1.20.8-2ubuntu2.3
2:1.20.8-2ubuntu2.4
2:1.20.8-2ubuntu2.6
2:1.20.9-2ubuntu1.1~20.04.1
2:1.20.9-2ubuntu1.2~20.04.1
2:1.20.9-2ubuntu1.2~20.04.2
2:1.20.11-1ubuntu1~20.04.2
2:1.20.13-1ubuntu1~20.04.2
2:1.20.13-1ubuntu1~20.04.3
2:1.20.13-1ubuntu1~20.04.4
2:1.20.13-1ubuntu1~20.04.5
2:1.20.13-1ubuntu1~20.04.6
2:1.20.13-1ubuntu1~20.04.8
2:1.20.13-1ubuntu1~20.04.9
2:1.20.13-1ubuntu1~20.04.12
2:1.20.13-1ubuntu1~20.04.14
2:1.20.13-1ubuntu1~20.04.15
2:1.20.13-1ubuntu1~20.04.16
2:1.20.13-1ubuntu1~20.04.17
2:1.20.13-1ubuntu1~20.04.18
2:1.20.13-1ubuntu1~20.04.19
2:1.20.13-1ubuntu1~20.04.20
2:1.20.13-1ubuntu1~20.04.20+esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "xdmx",
            "binary_version": "2:1.20.13-1ubuntu1~20.04.20+esm1"
        },
        {
            "binary_name": "xdmx-tools",
            "binary_version": "2:1.20.13-1ubuntu1~20.04.20+esm1"
        },
        {
            "binary_name": "xnest",
            "binary_version": "2:1.20.13-1ubuntu1~20.04.20+esm1"
        },
        {
            "binary_version": "2:1.20.13-1ubuntu1~20.04.20+esm1",
            "binary_name": "xorg-server-source"
        },
        {
            "binary_name": "xserver-common",
            "binary_version": "2:1.20.13-1ubuntu1~20.04.20+esm1"
        },
        {
            "binary_name": "xserver-xephyr",
            "binary_version": "2:1.20.13-1ubuntu1~20.04.20+esm1"
        },
        {
            "binary_version": "2:1.20.13-1ubuntu1~20.04.20+esm1",
            "binary_name": "xserver-xorg-core"
        },
        {
            "binary_name": "xserver-xorg-legacy",
            "binary_version": "2:1.20.13-1ubuntu1~20.04.20+esm1"
        },
        {
            "binary_name": "xvfb",
            "binary_version": "2:1.20.13-1ubuntu1~20.04.20+esm1"
        },
        {
            "binary_name": "xwayland",
            "binary_version": "2:1.20.13-1ubuntu1~20.04.20+esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-55999.json"