UBUNTU-CVE-2026-52854

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Source
https://ubuntu.com/security/CVE-2026-52854
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-52854.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-52854
Upstream
Published
2026-08-20T00:00:00Z
Modified
2026-08-20T10:45:56.548902045Z
Severity
  • 8.6 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

Maps is a MediaWiki extension that enables visualization of geographic data through dynamic embedded maps. Prior to version 12.1.3, the display_map parser function in the Leaflet service accepts attacker-controlled HTML in the overlays parameter, and resources/leaflet/jquery.leaflet.js uses the overlay name as a Leaflet layer-control label without escaping it. A wiki user with the edit permission can store malicious wikitext that causes script execution when another user previews or views the affected map. The script executes in the viewing user's browser session and can access data or perform actions available to that user. This issue is fixed in version 12.1.3.

References

Affected packages

Ubuntu:18.04:LTS / mediawiki

Package

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

Affected ranges

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

Affected versions

1:1.*
1:1.27.3-1
1:1.27.4-1
1:1.27.4-2
1:1.27.4-3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1:1.27.4-3",
            "binary_name": "mediawiki"
        },
        {
            "binary_version": "1:1.27.4-3",
            "binary_name": "mediawiki-classes"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-52854.json"

Ubuntu:Pro:20.04:LTS / mediawiki

Package

Name
mediawiki
Purl
pkg:deb/ubuntu/mediawiki?arch=source&distro=esm-apps%2Ffocal

Affected ranges

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

Affected versions

1:1.*
1:1.31.2-1ubuntu1
1:1.31.5-1
1:1.31.5-1ubuntu1
1:1.31.5-2
1:1.31.5-3
1:1.31.5-3ubuntu1
1:1.31.6-1
1:1.31.7-1
1:1.31.7-1ubuntu0.1~esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1:1.31.7-1ubuntu0.1~esm1",
            "binary_name": "mediawiki"
        },
        {
            "binary_version": "1:1.31.7-1ubuntu0.1~esm1",
            "binary_name": "mediawiki-classes"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-52854.json"

Ubuntu:Pro:22.04:LTS / mediawiki

Package

Name
mediawiki
Purl
pkg:deb/ubuntu/mediawiki?arch=source&distro=esm-apps%2Fjammy

Affected ranges

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

Affected versions

1:1.*
1:1.35.3-1
1:1.35.4-1
1:1.35.5-1
1:1.35.5-1ubuntu1
1:1.35.5-1ubuntu2
1:1.35.5-1ubuntu3
1:1.35.6-1
1:1.35.6-1ubuntu0.1~esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1:1.35.6-1ubuntu0.1~esm1",
            "binary_name": "mediawiki"
        },
        {
            "binary_version": "1:1.35.6-1ubuntu0.1~esm1",
            "binary_name": "mediawiki-classes"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-52854.json"

Ubuntu:Pro:24.04:LTS / mediawiki

Package

Name
mediawiki
Purl
pkg:deb/ubuntu/mediawiki?arch=source&distro=esm-apps%2Fnoble

Affected ranges

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

Affected versions

1:1.*
1:1.39.4-2
1:1.39.5-1
1:1.39.6-1
1:1.39.7-1
1:1.39.7-1ubuntu0.1~esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1:1.39.7-1ubuntu0.1~esm1",
            "binary_name": "mediawiki"
        },
        {
            "binary_version": "1:1.39.7-1ubuntu0.1~esm1",
            "binary_name": "mediawiki-classes"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-52854.json"

Ubuntu:26.04:LTS / mediawiki

Package

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

Affected ranges

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

Affected versions

1:1.*
1:1.43.3+dfsg-1
1:1.43.5+dfsg-1
1:1.43.6+dfsg-2
1:1.43.8+dfsg-1
1:1.43.8+dfsg-2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1:1.43.8+dfsg-2",
            "binary_name": "mediawiki"
        },
        {
            "binary_version": "1:1.43.8+dfsg-2",
            "binary_name": "mediawiki-classes"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-52854.json"