usn-8315-1
Vulnerability from osv_ubuntu
Published
2026-05-27 08:39
Modified
2026-05-27 08:39
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": [
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2026-34088",
"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"
}
]
}
],
"ecosystem": "Ubuntu:Pro:20.04:LTS"
}
},
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "mediawiki",
"binary_version": "1:1.31.7-1ubuntu0.1~esm1"
},
{
"binary_name": "mediawiki-classes",
"binary_version": "1:1.31.7-1ubuntu0.1~esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:20.04:LTS",
"name": "mediawiki",
"purl": "pkg:deb/ubuntu/mediawiki@1:1.31.7-1ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/focal"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1:1.31.7-1ubuntu0.1~esm1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"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"
]
},
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2026-34087",
"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-2026-34088",
"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"
}
]
}
],
"ecosystem": "Ubuntu:Pro:22.04:LTS"
}
},
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "mediawiki",
"binary_version": "1:1.35.6-1ubuntu0.1~esm1"
},
{
"binary_name": "mediawiki-classes",
"binary_version": "1:1.35.6-1ubuntu0.1~esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:22.04:LTS",
"name": "mediawiki",
"purl": "pkg:deb/ubuntu/mediawiki@1:1.35.6-1ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/jammy"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1:1.35.6-1ubuntu0.1~esm1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"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"
]
},
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2026-34087",
"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-2026-34088",
"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-2026-34092",
"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"
}
]
}
],
"ecosystem": "Ubuntu:Pro:24.04:LTS"
}
},
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "mediawiki",
"binary_version": "1:1.39.7-1ubuntu0.1~esm1"
},
{
"binary_name": "mediawiki-classes",
"binary_version": "1:1.39.7-1ubuntu0.1~esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:24.04:LTS",
"name": "mediawiki",
"purl": "pkg:deb/ubuntu/mediawiki@1:1.39.7-1ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/noble"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1:1.39.7-1ubuntu0.1~esm1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1:1.39.4-2",
"1:1.39.5-1",
"1:1.39.6-1",
"1:1.39.7-1"
]
}
],
"aliases": [],
"details": "It was discovered that MediaWiki incorrectly handled group membership \nvisibility in the OATHAuth extension. An authenticated attacker could \nuse this issue to determine if other users had two-factor authentication \nenabled. (CVE-2026-34087)\n\nIt was discovered that MediaWiki incorrectly handled suppressed log entry \ntitles in the RecentChanges list. An unauthenticated attacker could use \nthis issue to view titles of deleted or suppressed pages that should be hidden.\n(CVE-2026-34088)\n\nIt was discovered that MediaWiki incorrectly handled resource loading timing\ninformation. An attacker could use this issue to determine if certain pages \nexisted on a wiki. (CVE-2026-34092)",
"id": "USN-8315-1",
"modified": "2026-05-27T08:39:27Z",
"published": "2026-05-27T08:39:27Z",
"references": [
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-8315-1"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2026-34087"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2026-34088"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2026-34092"
}
],
"related": [],
"schema_version": "1.7.0",
"summary": "mediawiki vulnerabilities",
"upstream": [
"UBUNTU-CVE-2026-34087",
"UBUNTU-CVE-2026-34088",
"UBUNTU-CVE-2026-34092"
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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