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CVE-2021-32809

Arbitrary HTML injection vulnerability in ckeditor

Published: Aug 12, 2021Updated: Nov 21, 2024 Sources: CVE List NVD GHSA BDUCWE-94
NVD MITRE
4.6CVSSMEDIUM
EPSS Score
1.2%
Top 36.2%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

ckeditor is an open source WYSIWYG HTML editor with rich content support. A potential vulnerability has been discovered in CKEditor 4 [Clipboard](https://ckeditor.com/cke4/addon/clipboard) package. The vulnerability allowed to abuse paste functionality using malformed HTML, which could result in injecting arbitrary HTML into the editor. It affects all users using the CKEditor 4 plugins listed above at version >= 4.5.2. The problem has been recognized and patched. The fix will be available in version 4.16.2.

CVSS Vector Breakdown

AV:NAC:LPR:LUI:RS:UC:LI:LA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:RUser Interaction
Required
Scope
S:UScope
Unchanged
Impact
C:LConfidentiality
Low
I:LIntegrity
Low
A:NAvailability
None
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Weaknesses

CWE-94CWE-79

Affected Products

ckeditor4ckeditor
On-prem
Web & CMS Plugins / cms-core
ckeditor4npmOSS Libraries
Debian GNU/LinuxСообщество свободного программного обеспечения
On-premOS
Operating Systems / linux-distro
CKEditorThe CKEditor Team
Library
Web & CMS Plugins / cms-core
ckeditorckeditor
LibraryLibrary
Web & CMS Plugins / cms-core
ckeditoross-projectWeb & CMS Pluginsaka ckeditor, ckeditor4, ckeditor5
npmpackage-ecosystemOSS Libraries
сообщество свободного программного обеспеченияoss-projectOperating Systemsaka сообщество свободного программного обеспечения, fsf
the ckeditor teamoss-projectWeb & CMS Pluginsaka ckeditor
and 9 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

Official Patch Available

MITRE ATT&CK

3 techniques
Execution
Initial Access
View detailed technique mapping

References

https://github.com/ckeditor/ckeditor4/security/advisories/GHSA-7889-rm5j-hpgg
github.com
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NYA354LJP47KCVJMTUO77ZCX3ZK42G3T/
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UVOYN2WKDPLKCNILIGEZM236ABQASLGW/
lists.fedoraproject.org
and 12 more references View all →

Timeline

Published
Aug 12, 2021
Last Updated
Nov 21, 2024

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