USN-8315-1

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Source
https://ubuntu.com/security/notices/USN-8315-1
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8315-1.json
JSON Data
https://api.osv.dev/v1/vulns/USN-8315-1
Upstream
Published
2026-05-27T08:39:27Z
Modified
2026-05-27T15:47:45.721301211Z
Summary
mediawiki vulnerabilities
Details

It was discovered that MediaWiki incorrectly handled group membership visibility in the OATHAuth extension. An authenticated attacker could use this issue to determine if other users had two-factor authentication enabled. (CVE-2026-34087)

It was discovered that MediaWiki incorrectly handled suppressed log entry titles in the RecentChanges list. An unauthenticated attacker could use this issue to view titles of deleted or suppressed pages that should be hidden. (CVE-2026-34088)

It was discovered that MediaWiki incorrectly handled resource loading timing information. An attacker could use this issue to determine if certain pages existed on a wiki. (CVE-2026-34092)

References

Affected packages

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
Fixed
1:1.31.7-1ubuntu0.1~esm1

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": "1:1.31.7-1ubuntu0.1~esm1",
            "binary_name": "mediawiki"
        },
        {
            "binary_version": "1:1.31.7-1ubuntu0.1~esm1",
            "binary_name": "mediawiki-classes"
        }
    ],
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro"
}

Database specific

cves_map 
{
    "cves": [
        {
            "severity": [
                {
                    "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/R:U/RE:M",
                    "type": "CVSS_V4"
                },
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ],
            "id": "CVE-2026-34088"
        }
    ],
    "ecosystem": "Ubuntu:Pro:20.04:LTS"
}
source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8315-1.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
Fixed
1:1.35.6-1ubuntu0.1~esm1

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": "1:1.35.6-1ubuntu0.1~esm1",
            "binary_name": "mediawiki"
        },
        {
            "binary_version": "1:1.35.6-1ubuntu0.1~esm1",
            "binary_name": "mediawiki-classes"
        }
    ],
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro"
}

Database specific

cves_map 
{
    "ecosystem": "Ubuntu:Pro:22.04:LTS",
    "cves": [
        {
            "severity": [
                {
                    "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/S:N/AU:Y/R:A/RE:M",
                    "type": "CVSS_V4"
                },
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ],
            "id": "CVE-2026-34087"
        },
        {
            "severity": [
                {
                    "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/R:U/RE:M",
                    "type": "CVSS_V4"
                },
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ],
            "id": "CVE-2026-34088"
        }
    ]
}
source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8315-1.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
Fixed
1:1.39.7-1ubuntu0.1~esm1

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": "1:1.39.7-1ubuntu0.1~esm1",
            "binary_name": "mediawiki"
        },
        {
            "binary_version": "1:1.39.7-1ubuntu0.1~esm1",
            "binary_name": "mediawiki-classes"
        }
    ],
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro"
}

Database specific

cves_map 
{
    "cves": [
        {
            "severity": [
                {
                    "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/S:N/AU:Y/R:A/RE:M",
                    "type": "CVSS_V4"
                },
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ],
            "id": "CVE-2026-34087"
        },
        {
            "severity": [
                {
                    "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/R:U/RE:M",
                    "type": "CVSS_V4"
                },
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ],
            "id": "CVE-2026-34088"
        },
        {
            "severity": [
                {
                    "score": "CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N",
                    "type": "CVSS_V4"
                },
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ],
            "id": "CVE-2026-34092"
        }
    ],
    "ecosystem": "Ubuntu:Pro:24.04:LTS"
}
source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8315-1.json"