High
dokuwiki — security advisory
An issue in Dokuwiki v.2025-05-14b "Librarian" [56.2] allows a remote attacker to cause a denial of service via the media_upload_xhr() function in the media.php file
- Products
- dokuwiki
- Affected versions
- 0.0.20140929.d-1, 0.0.20140929.d-1ubuntu1, 0.0.20160626.a-2, 0.0.20180422.a-2, 0.0.20180422.a-2.1, 0.0.20220731.a-2, 2024-02-06b+dfsg-4, 2024-02-06b+dfsg-9, 2025-05-14.a+dfsg-4, 2025-05-14.b+dfsg-1, 2025-05-14.b+dfsg-2, 2025-05-14.b+dfsg-3, 2025-05-14.b+dfsg-4, 2025-05-14.b+dfsg-5, 2025-05-14.b+dfsg-6, 2026-07-14.a+dfsg-2
- Fixed versions
- Not specified
- CVEs
- CVE-2026-26477
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 00:56 UTC · Revision 1
Source evidence
An issue in Dokuwiki v.2025-05-14b "Librarian" [56.2] allows a remote attacker to cause a denial of service via the media_upload_xhr() function in the media.php file
osv:UBUNTU-CVE-2026-26477
dokuwiki
Fixed versions: Not specified
dokuwiki
Fixed versions: Not specified
dokuwiki
Fixed versions: Not specified
dokuwiki
Fixed versions: Not specified
dokuwiki
Fixed versions: Not specified
dokuwiki
Fixed versions: Not specified
dokuwiki
Fixed versions: Not specified
dokuwiki
Fixed versions: Not specified
Complete source record
{
"id": "e1dcb7eef5721c8596940fd08511810681051530266bc516bb87fced4e99f337",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-26477",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2026-26477",
"summary": "An issue in Dokuwiki v.2025-05-14b \"Librarian\" [56.2] allows a remote attacker to cause a denial of service via the media_upload_xhr() function in the media.php file",
"evidence": "osv:UBUNTU-CVE-2026-26477",
"products": [
{
"name": {
"value": "dokuwiki",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "0.0.20140929.d-1",
"evidence": "/affected/0/versions"
},
{
"value": "0.0.20140929.d-1ubuntu1",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
"value": "dokuwiki",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "0.0.20160626.a-2",
"evidence": "/affected/1/versions"
}
]
},
{
"name": {
"value": "dokuwiki",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "0.0.20180422.a-2",
"evidence": "/affected/2/versions"
}
]
},
{
"name": {
"value": "dokuwiki",
"evidence": "/affected/3/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "0.0.20180422.a-2.1",
"evidence": "/affected/3/versions"
}
]
},
{
"name": {
"value": "dokuwiki",
"evidence": "/affected/4/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "0.0.20220731.a-2",
"evidence": "/affected/4/versions"
}
]
},
{
"name": {
"value": "dokuwiki",
"evidence": "/affected/5/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "2024-02-06b+dfsg-4",
"evidence": "/affected/5/versions"
},
{
"value": "2024-02-06b+dfsg-9",
"evidence": "/affected/5/versions"
}
]
},
{
"name": {
"value": "dokuwiki",
"evidence": "/affected/6/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "2025-05-14.b+dfsg-5",
"evidence": "/affected/6/versions"
},
{
"value": "2025-05-14.b+dfsg-6",
"evidence": "/affected/6/versions"
},
{
"value": "2026-07-14.a+dfsg-2",
"evidence": "/affected/6/versions"
}
]
},
{
"name": {
"value": "dokuwiki",
"evidence": "/affected/7/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "2024-02-06b+dfsg-9",
"evidence": "/affected/7/versions"
},
{
"value": "2025-05-14.a+dfsg-4",
"evidence": "/affected/7/versions"
},
{
"value": "2025-05-14.b+dfsg-1",
"evidence": "/affected/7/versions"
},
{
"value": "2025-05-14.b+dfsg-2",
"evidence": "/affected/7/versions"
},
{
"value": "2025-05-14.b+dfsg-3",
"evidence": "/affected/7/versions"
},
{
"value": "2025-05-14.b+dfsg-4",
"evidence": "/affected/7/versions"
},
{
"value": "2025-05-14.b+dfsg-5",
"evidence": "/affected/7/versions"
}
]
}
],
"severity": "high",
"structured": {
"id": "UBUNTU-CVE-2026-26477",
"aliases": [
"UBUNTU-CVE-2026-26477"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "dokuwiki",
"purl": "pkg:deb/ubuntu/dokuwiki?arch=source&distro=xenial",
"ecosystem": "Ubuntu:16.04:LTS"
},
"versions": [
"0.0.20140929.d-1",
"0.0.20140929.d-1ubuntu1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-26477.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "dokuwiki",
"binary_version": "0.0.20140929.d-1ubuntu1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "dokuwiki",
"purl": "pkg:deb/ubuntu/dokuwiki?arch=source&distro=bionic",
"ecosystem": "Ubuntu:18.04:LTS"
},
"versions": [
"0.0.20160626.a-2"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-26477.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "dokuwiki",
"binary_version": "0.0.20160626.a-2"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "dokuwiki",
"purl": "pkg:deb/ubuntu/dokuwiki?arch=source&distro=focal",
"ecosystem": "Ubuntu:20.04:LTS"
},
"versions": [
"0.0.20180422.a-2"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-26477.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "dokuwiki",
"binary_version": "0.0.20180422.a-2"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "dokuwiki",
"purl": "pkg:deb/ubuntu/dokuwiki?arch=source&distro=jammy",
"ecosystem": "Ubuntu:22.04:LTS"
},
"versions": [
"0.0.20180422.a-2.1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-26477.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "dokuwiki",
"binary_version": "0.0.20180422.a-2.1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
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}
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}
],
"package": {
"name": "dokuwiki",
"purl": "pkg:deb/ubuntu/dokuwiki?arch=source&distro=noble",
"ecosystem": "Ubuntu:24.04:LTS"
},
"versions": [
"0.0.20220731.a-2"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-26477.json"
},
"ecosystem_specific": {
"binaries": [
{
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}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
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"introduced": "0"
}
]
}
],
"package": {
"name": "dokuwiki",
"purl": "pkg:deb/ubuntu/dokuwiki?arch=source&distro=questing",
"ecosystem": "Ubuntu:25.10"
},
"versions": [
"2024-02-06b+dfsg-4",
"2024-02-06b+dfsg-9"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-26477.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "dokuwiki",
"binary_version": "2024-02-06b+dfsg-9"
},
{
"binary_name": "dokuwiki-farm",
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}
]
}
},
{
"ranges": [
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}
]
}
],
"package": {
"name": "dokuwiki",
"purl": "pkg:deb/ubuntu/dokuwiki?arch=source&distro=stonking",
"ecosystem": "Ubuntu:26.10"
},
"versions": [
"2025-05-14.b+dfsg-5",
"2025-05-14.b+dfsg-6",
"2026-07-14.a+dfsg-2"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-26477.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "dokuwiki",
"binary_version": "2026-07-14.a+dfsg-2"
},
{
"binary_name": "dokuwiki-farm",
"binary_version": "2026-07-14.a+dfsg-2"
}
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}
},
{
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],
"package": {
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"purl": "pkg:deb/ubuntu/dokuwiki?arch=source&distro=resolute",
"ecosystem": "Ubuntu:26.04:LTS"
},
"versions": [
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"2025-05-14.a+dfsg-4",
"2025-05-14.b+dfsg-1",
"2025-05-14.b+dfsg-2",
"2025-05-14.b+dfsg-3",
"2025-05-14.b+dfsg-4",
"2025-05-14.b+dfsg-5"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-26477.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "dokuwiki",
"binary_version": "2025-05-14.b+dfsg-5"
},
{
"binary_name": "dokuwiki-farm",
"binary_version": "2025-05-14.b+dfsg-5"
}
]
}
}
],
"modified": "2026-10-17T12:56:18.069749281Z",
"provider": "osv",
"upstream": [
"CVE-2026-26477"
],
"references": [
"https://ubuntu.com/security/CVE-2026-26477",
"https://www.cve.org/CVERecord?id=CVE-2026-26477",
"https://github.com/Hebing123/cve/issues/94"
]
},
"related_cves": [
{
"value": "CVE-2026-26477",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 355172,
"published_at": "2026-04-03T15:16:00+00:00"
}