UBUNTU-CVE-2021-30156

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Source
https://ubuntu.com/security/CVE-2021-30156
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-30156.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2021-30156
Upstream
Published
2021-04-09T07:15:00Z
Modified
2025-10-10T15:01:05Z
Severity
  • 4.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

An issue was discovered in MediaWiki before 1.31.12 and 1.32.x through 1.35.x before 1.35.2. Special:Contributions can leak that a "hidden" user exists.

References

Affected packages

Ubuntu:22.04:LTS

mediawiki

Package

Name
mediawiki
Purl
pkg:deb/ubuntu/mediawiki@1:1.35.6-1?arch=source&distro=jammy

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

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1:1.35.6-1",
            "binary_name": "mediawiki"
        },
        {
            "binary_version": "1:1.35.6-1",
            "binary_name": "mediawiki-classes"
        }
    ]
}

Ubuntu:24.04:LTS

mediawiki

Package

Name
mediawiki
Purl
pkg:deb/ubuntu/mediawiki@1:1.39.7-1?arch=source&distro=noble

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

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1:1.39.7-1",
            "binary_name": "mediawiki"
        },
        {
            "binary_version": "1:1.39.7-1",
            "binary_name": "mediawiki-classes"
        }
    ]
}

Ubuntu:25.04

mediawiki

Package

Name
mediawiki
Purl
pkg:deb/ubuntu/mediawiki@1:1.43.1+dfsg-1?arch=source&distro=plucky

Affected ranges

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

Affected versions

1:1.*

1:1.39.10-1
1:1.43.0-0maysync3
1:1.43.0+dfsg-2
1:1.43.1+dfsg-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1:1.43.1+dfsg-1",
            "binary_name": "mediawiki"
        },
        {
            "binary_version": "1:1.43.1+dfsg-1",
            "binary_name": "mediawiki-classes"
        }
    ]
}

Ubuntu:25.10

mediawiki

Package

Name
mediawiki
Purl
pkg:deb/ubuntu/mediawiki@1:1.43.3+dfsg-1?arch=source&distro=questing

Affected ranges

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

Affected versions

1:1.*

1:1.43.1+dfsg-1
1:1.43.1+dfsg-2
1:1.43.3+dfsg-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1:1.43.3+dfsg-1",
            "binary_name": "mediawiki"
        },
        {
            "binary_version": "1:1.43.3+dfsg-1",
            "binary_name": "mediawiki-classes"
        }
    ]
}

Ubuntu:Pro:18.04:LTS

mediawiki

Package

Name
mediawiki
Purl
pkg:deb/ubuntu/mediawiki@1:1.27.4-3?arch=source&distro=esm-apps/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"
        }
    ]
}

Ubuntu:Pro:20.04:LTS

mediawiki

Package

Name
mediawiki
Purl
pkg:deb/ubuntu/mediawiki@1:1.31.7-1?arch=source&distro=esm-apps/focal

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

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1:1.31.7-1",
            "binary_name": "mediawiki"
        },
        {
            "binary_version": "1:1.31.7-1",
            "binary_name": "mediawiki-classes"
        }
    ]
}