High
wordpress — security advisory
In affected versions of WordPress, files with a specially crafted name when uploaded to the Media section can lead to script execution upon accessing the file. This requires an authenticated user with privileges to upload files. This has been patched in version 5.4.1, along with all the previously affected versions via a minor release (5.3.3, 5.2.6, 5.1.5, 5.0.9, 4.9.14, 4.8.13, 4.7.17, 4.6.18, 4.5.21, 4.4.22, 4.3.23, 4.2.27, 4.1.30, 4.0.30, 3.9.31, 3.8.33, 3.7.33).
- Products
- wordpress
- Affected versions
- 4.3+dfsg-1, 4.3.1+dfsg-1, 4.4+dfsg-1, 4.4.1+dfsg-1, 4.4.2+dfsg-1, 4.4.2+dfsg-1ubuntu1, 4.8.2+dfsg-2, 4.8.3+dfsg-1, 4.9.1+dfsg-1, 4.9.2+dfsg-1, 4.9.4+dfsg-1, 4.9.5+dfsg1-1, 5.2.2+dfsg1-1, 5.2.4+dfsg1-1, 5.3.2+dfsg1-1, 5.3.2+dfsg1-1ubuntu1, 5.7.1+dfsg1-2ubuntu1, 5.8.1+dfsg1-2ubuntu1, 5.8.2+dfsg1-1ubuntu1, 5.8.3+dfsg1-1ubuntu1, 5.8.3+dfsg1-1ubuntu1.1, 6.2+dfsg1-1ubuntu1, 6.4.3+dfsg1-1ubuntu1, 6.7.2+dfsg1-1.1ubuntu1, 6.7.2+dfsg1-1.1ubuntu2
- Fixed versions
- Not specified
- CVEs
- CVE-2020-11026
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 00:51 UTC · Revision 1
Source evidence
In affected versions of WordPress, files with a specially crafted name when uploaded to the Media section can lead to script execution upon accessing the file. This requires an authenticated user with privileges to upload files. This has been patched in version 5.4.1, along with all the previously affected versions via a minor release (5.3.3, 5.2.6, 5.1.5, 5.0.9, 4.9.14, 4.8.13, 4.7.17, 4.6.18, 4.5.21, 4.4.22, 4.3.23, 4.2.27, 4.1.30, 4.0.30, 3.9.31, 3.8.33, 3.7.33).
osv:UBUNTU-CVE-2020-11026
wordpress
Fixed versions: Not specified
wordpress
Fixed versions: Not specified
wordpress
Fixed versions: Not specified
wordpress
Fixed versions: Not specified
wordpress
Fixed versions: Not specified
wordpress
Fixed versions: Not specified
wordpress
Fixed versions: Not specified
wordpress
Fixed versions: Not specified
Complete source record
{
"id": "97b46474fe0d49aae098c37888b8fd57da153882701d4deed9c4a0f28cae3534",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2020-11026",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2020-11026",
"summary": "In affected versions of WordPress, files with a specially crafted name when uploaded to the Media section can lead to script execution upon accessing the file. This requires an authenticated user with privileges to upload files. This has been patched in version 5.4.1, along with all the previously affected versions via a minor release (5.3.3, 5.2.6, 5.1.5, 5.0.9, 4.9.14, 4.8.13, 4.7.17, 4.6.18, 4.5.21, 4.4.22, 4.3.23, 4.2.27, 4.1.30, 4.0.30, 3.9.31, 3.8.33, 3.7.33).",
"evidence": "osv:UBUNTU-CVE-2020-11026",
"products": [
{
"name": {
"value": "wordpress",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "4.3+dfsg-1",
"evidence": "/affected/0/versions"
},
{
"value": "4.3.1+dfsg-1",
"evidence": "/affected/0/versions"
},
{
"value": "4.4+dfsg-1",
"evidence": "/affected/0/versions"
},
{
"value": "4.4.1+dfsg-1",
"evidence": "/affected/0/versions"
},
{
"value": "4.4.2+dfsg-1",
"evidence": "/affected/0/versions"
},
{
"value": "4.4.2+dfsg-1ubuntu1",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
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"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "4.8.2+dfsg-2",
"evidence": "/affected/1/versions"
},
{
"value": "4.8.3+dfsg-1",
"evidence": "/affected/1/versions"
},
{
"value": "4.9.1+dfsg-1",
"evidence": "/affected/1/versions"
},
{
"value": "4.9.2+dfsg-1",
"evidence": "/affected/1/versions"
},
{
"value": "4.9.4+dfsg-1",
"evidence": "/affected/1/versions"
},
{
"value": "4.9.5+dfsg1-1",
"evidence": "/affected/1/versions"
}
]
},
{
"name": {
"value": "wordpress",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
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"affected_versions": [
{
"value": "5.2.2+dfsg1-1",
"evidence": "/affected/2/versions"
},
{
"value": "5.2.4+dfsg1-1",
"evidence": "/affected/2/versions"
},
{
"value": "5.3.2+dfsg1-1",
"evidence": "/affected/2/versions"
},
{
"value": "5.3.2+dfsg1-1ubuntu1",
"evidence": "/affected/2/versions"
}
]
},
{
"name": {
"value": "wordpress",
"evidence": "/affected/3/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "5.7.1+dfsg1-2ubuntu1",
"evidence": "/affected/3/versions"
},
{
"value": "5.8.1+dfsg1-2ubuntu1",
"evidence": "/affected/3/versions"
},
{
"value": "5.8.2+dfsg1-1ubuntu1",
"evidence": "/affected/3/versions"
},
{
"value": "5.8.3+dfsg1-1ubuntu1",
"evidence": "/affected/3/versions"
},
{
"value": "5.8.3+dfsg1-1ubuntu1.1",
"evidence": "/affected/3/versions"
}
]
},
{
"name": {
"value": "wordpress",
"evidence": "/affected/4/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "6.2+dfsg1-1ubuntu1",
"evidence": "/affected/4/versions"
},
{
"value": "6.4.3+dfsg1-1ubuntu1",
"evidence": "/affected/4/versions"
}
]
},
{
"name": {
"value": "wordpress",
"evidence": "/affected/5/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "6.7.2+dfsg1-1.1ubuntu1",
"evidence": "/affected/5/versions"
}
]
},
{
"name": {
"value": "wordpress",
"evidence": "/affected/6/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "6.7.2+dfsg1-1.1ubuntu2",
"evidence": "/affected/6/versions"
}
]
},
{
"name": {
"value": "wordpress",
"evidence": "/affected/7/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "6.7.2+dfsg1-1.1ubuntu1",
"evidence": "/affected/7/versions"
},
{
"value": "6.7.2+dfsg1-1.1ubuntu2",
"evidence": "/affected/7/versions"
}
]
}
],
"severity": "high",
"structured": {
"id": "UBUNTU-CVE-2020-11026",
"aliases": [
"UBUNTU-CVE-2020-11026"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "wordpress",
"purl": "pkg:deb/ubuntu/wordpress?arch=source&distro=xenial",
"ecosystem": "Ubuntu:16.04:LTS"
},
"versions": [
"4.3+dfsg-1",
"4.3.1+dfsg-1",
"4.4+dfsg-1",
"4.4.1+dfsg-1",
"4.4.2+dfsg-1",
"4.4.2+dfsg-1ubuntu1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-11026.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "wordpress",
"binary_version": "4.4.2+dfsg-1ubuntu1"
},
{
"binary_name": "wordpress-l10n",
"binary_version": "4.4.2+dfsg-1ubuntu1"
},
{
"binary_name": "wordpress-theme-twentyfifteen",
"binary_version": "4.4.2+dfsg-1ubuntu1"
},
{
"binary_name": "wordpress-theme-twentyfourteen",
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},
{
"binary_name": "wordpress-theme-twentysixteen",
"binary_version": "4.4.2+dfsg-1ubuntu1"
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]
}
},
{
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}
],
"package": {
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"purl": "pkg:deb/ubuntu/wordpress?arch=source&distro=bionic",
"ecosystem": "Ubuntu:18.04:LTS"
},
"versions": [
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"4.8.3+dfsg-1",
"4.9.1+dfsg-1",
"4.9.2+dfsg-1",
"4.9.4+dfsg-1",
"4.9.5+dfsg1-1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-11026.json"
},
"ecosystem_specific": {
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},
{
"binary_name": "wordpress-l10n",
"binary_version": "4.9.5+dfsg1-1"
},
{
"binary_name": "wordpress-theme-twentyfifteen",
"binary_version": "4.9.5+dfsg1-1"
},
{
"binary_name": "wordpress-theme-twentyseventeen",
"binary_version": "4.9.5+dfsg1-1"
},
{
"binary_name": "wordpress-theme-twentysixteen",
"binary_version": "4.9.5+dfsg1-1"
}
]
}
},
{
"ranges": [
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],
"package": {
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"purl": "pkg:deb/ubuntu/wordpress?arch=source&distro=focal",
"ecosystem": "Ubuntu:20.04:LTS"
},
"versions": [
"5.2.2+dfsg1-1",
"5.2.4+dfsg1-1",
"5.3.2+dfsg1-1",
"5.3.2+dfsg1-1ubuntu1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-11026.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "wordpress",
"binary_version": "5.3.2+dfsg1-1ubuntu1"
},
{
"binary_name": "wordpress-l10n",
"binary_version": "5.3.2+dfsg1-1ubuntu1"
},
{
"binary_name": "wordpress-theme-twentynineteen",
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},
{
"binary_name": "wordpress-theme-twentyseventeen",
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"5.8.1+dfsg1-2ubuntu1",
"5.8.2+dfsg1-1ubuntu1",
"5.8.3+dfsg1-1ubuntu1",
"5.8.3+dfsg1-1ubuntu1.1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-11026.json"
},
"ecosystem_specific": {
"binaries": [
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"binary_version": "5.8.3+dfsg1-1ubuntu1.1"
},
{
"binary_name": "wordpress-l10n",
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},
{
"binary_name": "wordpress-theme-twentynineteen",
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{
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"package": {
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"ecosystem": "Ubuntu:24.04:LTS"
},
"versions": [
"6.2+dfsg1-1ubuntu1",
"6.4.3+dfsg1-1ubuntu1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-11026.json"
},
"ecosystem_specific": {
"binaries": [
{
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},
{
"binary_name": "wordpress-l10n",
"binary_version": "6.4.3+dfsg1-1ubuntu1"
},
{
"binary_name": "wordpress-theme-twentytwentyfour",
"binary_version": "6.4.3+dfsg1-1ubuntu1"
},
{
"binary_name": "wordpress-theme-twentytwentythree",
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},
{
"binary_name": "wordpress-theme-twentytwentytwo",
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}
]
}
},
{
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{
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}
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}
],
"package": {
"name": "wordpress",
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"ecosystem": "Ubuntu:25.10"
},
"versions": [
"6.7.2+dfsg1-1.1ubuntu1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-11026.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "wordpress",
"binary_version": "6.7.2+dfsg1-1.1ubuntu1"
},
{
"binary_name": "wordpress-l10n",
"binary_version": "6.7.2+dfsg1-1.1ubuntu1"
},
{
"binary_name": "wordpress-theme-twentytwentyfive",
"binary_version": "6.7.2+dfsg1-1.1ubuntu1"
},
{
"binary_name": "wordpress-theme-twentytwentyfour",
"binary_version": "6.7.2+dfsg1-1.1ubuntu1"
},
{
"binary_name": "wordpress-theme-twentytwentythree",
"binary_version": "6.7.2+dfsg1-1.1ubuntu1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
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{
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}
]
}
],
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"name": "wordpress",
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"ecosystem": "Ubuntu:26.10"
},
"versions": [
"6.7.2+dfsg1-1.1ubuntu2"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-11026.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "wordpress",
"binary_version": "6.7.2+dfsg1-1.1ubuntu2"
},
{
"binary_name": "wordpress-l10n",
"binary_version": "6.7.2+dfsg1-1.1ubuntu2"
},
{
"binary_name": "wordpress-theme-twentytwentyfive",
"binary_version": "6.7.2+dfsg1-1.1ubuntu2"
},
{
"binary_name": "wordpress-theme-twentytwentyfour",
"binary_version": "6.7.2+dfsg1-1.1ubuntu2"
},
{
"binary_name": "wordpress-theme-twentytwentythree",
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]
}
},
{
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{
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]
}
],
"package": {
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"purl": "pkg:deb/ubuntu/wordpress?arch=source&distro=resolute",
"ecosystem": "Ubuntu:26.04:LTS"
},
"versions": [
"6.7.2+dfsg1-1.1ubuntu1",
"6.7.2+dfsg1-1.1ubuntu2"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-11026.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "wordpress",
"binary_version": "6.7.2+dfsg1-1.1ubuntu2"
},
{
"binary_name": "wordpress-l10n",
"binary_version": "6.7.2+dfsg1-1.1ubuntu2"
},
{
"binary_name": "wordpress-theme-twentytwentyfive",
"binary_version": "6.7.2+dfsg1-1.1ubuntu2"
},
{
"binary_name": "wordpress-theme-twentytwentyfour",
"binary_version": "6.7.2+dfsg1-1.1ubuntu2"
},
{
"binary_name": "wordpress-theme-twentytwentythree",
"binary_version": "6.7.2+dfsg1-1.1ubuntu2"
}
]
}
}
],
"modified": "2026-10-17T12:56:10.351513967Z",
"provider": "osv",
"upstream": [
"CVE-2020-11026"
],
"references": [
"https://ubuntu.com/security/CVE-2020-11026",
"https://github.com/WordPress/wordpress-develop/security/advisories/GHSA-3gw2-4656-pfr2",
"https://wordpress.org/support/wordpress-version/version-5-4-1/#security-updates",
"https://www.cve.org/CVERecord?id=CVE-2020-11026"
]
},
"related_cves": [
{
"value": "CVE-2020-11026",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 354913,
"published_at": "2020-04-30T23:15:00+00:00"
}