UBUNTU-CVE-2026-54355

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Source
https://ubuntu.com/security/CVE-2026-54355
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-54355.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-54355
Upstream
Published
2026-09-21T00:00:00Z
Modified
2026-09-21T21:39:47Z
Severity
  • 5.3 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

MapServer is a system for developing web-based GIS applications. From 6.0 until 8.6.4, MapServer's OpenLayers HTML output for SERVICE=WMS&REQUEST=GetMap&FORMAT=application/openlayers reflects an attacker-controlled X-Forwarded-Host value received as HTTP_X_FORWARDED_HOST through msBuildOnlineResource(), processLine(), and the [mapserv_onlineresource] substitution in src/maputil.c and src/maptemplate.c without escaping it for a single-quoted JavaScript string. When the deployment trusts the forwarded header and does not configure a fixed ows_onlineresource or MS_ONLINERESOURCE value, embedded single quotes can escape the generated URL string. An unauthenticated attacker can craft a URL that executes arbitrary JavaScript in the MapServer site origin when opened by a victim, enabling access to sessions or tokens, same-origin data and requests, and actions as the victim. This issue is fixed in version 8.6.4.

References

Affected packages

Ubuntu:16.04:LTS
mapserver

Package

Name
mapserver
Purl
pkg:deb/ubuntu/mapserver?arch=source&distro=xenial

Affected ranges

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

Affected versions

7.*
7.0.0-4build1
7.0.0-5ubuntu1
7.0.0-7
7.0.0-8
7.0.0-8build1
7.0.0-9
7.0.0-9ubuntu1
7.0.0-9ubuntu2
7.0.0-9ubuntu3
7.0.0-9ubuntu3.1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "cgi-mapserver",
            "binary_version":  "7.0.0-9ubuntu3.1"
        },
        {
            "binary_name":  "libmapscript-java",
            "binary_version":  "7.0.0-9ubuntu3.1"
        },
        {
            "binary_name":  "libmapscript-perl",
            "binary_version":  "7.0.0-9ubuntu3.1"
        },
        {
            "binary_name":  "libmapserver2",
            "binary_version":  "7.0.0-9ubuntu3.1"
        },
        {
            "binary_name":  "mapserver-bin",
            "binary_version":  "7.0.0-9ubuntu3.1"
        },
        {
            "binary_name":  "python-mapscript",
            "binary_version":  "7.0.0-9ubuntu3.1"
        },
        {
            "binary_name":  "ruby-mapscript",
            "binary_version":  "7.0.0-9ubuntu3.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-54355.json"
Ubuntu:18.04:LTS
mapserver

Package

Name
mapserver
Purl
pkg:deb/ubuntu/mapserver?arch=source&distro=bionic

Affected ranges

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

Affected versions

7.*
7.0.6-2build1
7.0.7-1
7.0.7-1build1
7.0.7-1build2

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "cgi-mapserver",
            "binary_version":  "7.0.7-1build2"
        },
        {
            "binary_name":  "libmapscript-java",
            "binary_version":  "7.0.7-1build2"
        },
        {
            "binary_name":  "libmapscript-perl",
            "binary_version":  "7.0.7-1build2"
        },
        {
            "binary_name":  "libmapserver2",
            "binary_version":  "7.0.7-1build2"
        },
        {
            "binary_name":  "mapserver-bin",
            "binary_version":  "7.0.7-1build2"
        },
        {
            "binary_name":  "python-mapscript",
            "binary_version":  "7.0.7-1build2"
        },
        {
            "binary_name":  "ruby-mapscript",
            "binary_version":  "7.0.7-1build2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-54355.json"
Ubuntu:20.04:LTS
mapserver

Package

Name
mapserver
Purl
pkg:deb/ubuntu/mapserver?arch=source&distro=focal

Affected ranges

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

Affected versions

7.*
7.4.1-1build1
7.4.1-1build3
7.4.2-1
7.4.2-1build1
7.4.3-1
7.4.3-1build2
7.4.3-2
7.4.3-2build1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "cgi-mapserver",
            "binary_version":  "7.4.3-2build1"
        },
        {
            "binary_name":  "libmapscript-java",
            "binary_version":  "7.4.3-2build1"
        },
        {
            "binary_name":  "libmapscript-perl",
            "binary_version":  "7.4.3-2build1"
        },
        {
            "binary_name":  "libmapserver2",
            "binary_version":  "7.4.3-2build1"
        },
        {
            "binary_name":  "mapserver-bin",
            "binary_version":  "7.4.3-2build1"
        },
        {
            "binary_name":  "php-mapscript",
            "binary_version":  "7.4.3-2build1"
        },
        {
            "binary_name":  "php-mapscript-ng",
            "binary_version":  "7.4.3-2build1"
        },
        {
            "binary_name":  "python3-mapscript",
            "binary_version":  "7.4.3-2build1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-54355.json"
Ubuntu:22.04:LTS
mapserver

Package

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

Affected ranges

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

Affected versions

7.*
7.6.3-1~exp1ubuntu1
7.6.4-2
7.6.4-2build2

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "cgi-mapserver",
            "binary_version":  "7.6.4-2build2"
        },
        {
            "binary_name":  "libmapscript-java",
            "binary_version":  "7.6.4-2build2"
        },
        {
            "binary_name":  "libmapscript-perl",
            "binary_version":  "7.6.4-2build2"
        },
        {
            "binary_name":  "libmapserver2",
            "binary_version":  "7.6.4-2build2"
        },
        {
            "binary_name":  "mapserver-bin",
            "binary_version":  "7.6.4-2build2"
        },
        {
            "binary_name":  "python3-mapscript",
            "binary_version":  "7.6.4-2build2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-54355.json"
Ubuntu:24.04:LTS
mapserver

Package

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

Affected ranges

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

Affected versions

8.*
8.0.1-2build1
8.0.1-2build2
8.0.1-2build3
8.0.1-2build5
8.0.1-4ubuntu1
8.0.1-4ubuntu2

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "cgi-mapserver",
            "binary_version":  "8.0.1-4ubuntu2"
        },
        {
            "binary_name":  "libmapscript-java",
            "binary_version":  "8.0.1-4ubuntu2"
        },
        {
            "binary_name":  "libmapscript-perl",
            "binary_version":  "8.0.1-4ubuntu2"
        },
        {
            "binary_name":  "libmapserver2t64",
            "binary_version":  "8.0.1-4ubuntu2"
        },
        {
            "binary_name":  "mapserver-bin",
            "binary_version":  "8.0.1-4ubuntu2"
        },
        {
            "binary_name":  "php-mapscript-ng",
            "binary_version":  "8.0.1-4ubuntu2"
        },
        {
            "binary_name":  "python3-mapscript",
            "binary_version":  "8.0.1-4ubuntu2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-54355.json"
Ubuntu:26.04:LTS
mapserver

Package

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

Affected ranges

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

Affected versions

8.*
8.4.0-4build1
8.4.1-1
8.4.1-1build1
8.4.1-2
8.4.1-2build1
8.6.0-1
8.6.0-1build1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "cgi-mapserver",
            "binary_version":  "8.6.0-1build1"
        },
        {
            "binary_name":  "libmapscript-java",
            "binary_version":  "8.6.0-1build1"
        },
        {
            "binary_name":  "libmapscript-perl",
            "binary_version":  "8.6.0-1build1"
        },
        {
            "binary_name":  "libmapserver2t64",
            "binary_version":  "8.6.0-1build1"
        },
        {
            "binary_name":  "mapserver-bin",
            "binary_version":  "8.6.0-1build1"
        },
        {
            "binary_name":  "php-mapscript-ng",
            "binary_version":  "8.6.0-1build1"
        },
        {
            "binary_name":  "python3-mapscript",
            "binary_version":  "8.6.0-1build1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-54355.json"