ubuntu-cve-2026-28343
Vulnerability from osv_ubuntu
Published
2026-03-05 20:16
Modified
2026-06-24 09:00
Summary
Details
CKEditor 5 is a modern JavaScript rich-text editor with an MVC architecture. Starting in version 29.0.0 and prior to version 47.6.0, a cross-site scripting (XSS) vulnerability has been discovered in the General HTML Support feature. This vulnerability could be triggered by inserting specially crafted markup, leading to unauthorized JavaScript code execution, if the editor instance used an unsafe General HTML Support configuration. This issue has been patched in version 47.6.0.
Severity
6.4 (Medium)
6.1 (Medium)
N/A (UNKNOWN)
References
{
"affected": [
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "ckeditor",
"binary_version": "4.5.7+dfsg-2ubuntu0.16.04.1~esm3"
}
]
},
"package": {
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},
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{
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}
],
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}
],
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"4.5.7+dfsg-1",
"4.5.7+dfsg-2",
"4.5.7+dfsg-2ubuntu0.16.04.1~esm1",
"4.5.7+dfsg-2ubuntu0.16.04.1~esm2",
"4.5.7+dfsg-2ubuntu0.16.04.1~esm3"
]
},
{
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},
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}
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},
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{
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}
],
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}
],
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"5.2-1",
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]
},
{
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{
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{
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{
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{
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}
],
"versions": [
"4.4.7+dfsg-4syncable1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "ldap-account-manager",
"binary_version": "9.0-1build1"
},
{
"binary_name": "ldap-account-manager-lamdaemon",
"binary_version": "9.0-1build1"
}
]
},
"package": {
"ecosystem": "Ubuntu:26.04:LTS",
"name": "ldap-account-manager",
"purl": "pkg:deb/ubuntu/ldap-account-manager@9.0-1build1?arch=source\u0026distro=resolute"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"9.0-1",
"9.0-1build1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "request-tracker4",
"binary_version": "4.4.7+dfsg-4syncable1"
},
{
"binary_name": "rt4-apache2",
"binary_version": "4.4.7+dfsg-4syncable1"
},
{
"binary_name": "rt4-clients",
"binary_version": "4.4.7+dfsg-4syncable1"
},
{
"binary_name": "rt4-db-mysql",
"binary_version": "4.4.7+dfsg-4syncable1"
},
{
"binary_name": "rt4-db-postgresql",
"binary_version": "4.4.7+dfsg-4syncable1"
},
{
"binary_name": "rt4-db-sqlite",
"binary_version": "4.4.7+dfsg-4syncable1"
},
{
"binary_name": "rt4-doc-html",
"binary_version": "4.4.7+dfsg-4syncable1"
},
{
"binary_name": "rt4-fcgi",
"binary_version": "4.4.7+dfsg-4syncable1"
},
{
"binary_name": "rt4-standalone",
"binary_version": "4.4.7+dfsg-4syncable1"
}
]
},
"package": {
"ecosystem": "Ubuntu:26.04:LTS",
"name": "request-tracker4",
"purl": "pkg:deb/ubuntu/request-tracker4@4.4.7+dfsg-4syncable1?arch=source\u0026distro=resolute"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"4.4.7+dfsg-4syncable1"
]
}
],
"aliases": [],
"details": "CKEditor 5 is a modern JavaScript rich-text editor with an MVC architecture. Starting in version 29.0.0 and prior to version 47.6.0, a cross-site scripting (XSS) vulnerability has been discovered in the General HTML Support feature. This vulnerability could be triggered by inserting specially crafted markup, leading to unauthorized JavaScript code execution, if the editor instance used an unsafe General HTML Support configuration. This issue has been patched in version 47.6.0.",
"id": "UBUNTU-CVE-2026-28343",
"modified": "2026-06-24T09:00:24Z",
"published": "2026-03-05T20:16:00Z",
"references": [
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2026-28343"
},
{
"type": "REPORT",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-28343"
},
{
"type": "REPORT",
"url": "https://github.com/ckeditor/ckeditor5/releases/tag/v47.6.0"
},
{
"type": "REPORT",
"url": "https://github.com/ckeditor/ckeditor5/security/advisories/GHSA-jrqm-vmqc-gm93"
}
],
"related": [],
"schema_version": "1.7.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"upstream": [
"CVE-2026-28343"
]
}
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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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