CVE-2021-32809

Publication date 12 August 2021

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

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.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
ckeditor	22.04 LTS jammy	Not affected
	21.10 impish	Fixed 4.16.0+dfsg-2ubuntu0.1
	21.04 hirsute	Ignored end of life
	20.04 LTS focal	Fixed 4.12.1+dfsg-1ubuntu0.1
	18.04 LTS bionic	Fixed 4.5.7+dfsg-2ubuntu0.18.04.1
	16.04 LTS xenial	Fixed 4.5.7+dfsg-2ubuntu0.16.04.1~esm1
	14.04 LTS trusty	Not in release

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Severity score breakdown

Parameter	Value
Base score	5.4 · Medium
Attack vector	Network
Attack complexity	Low
Privileges required	Low
User interaction	Required
Scope	Changed
Confidentiality	Low
Integrity impact	Low
Availability impact	None
Vector	CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

CVE-2021-32809

Cvss 3 Severity Score

Description

Status

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Severity score breakdown

References

Related Ubuntu Security Notices (USN)

Other references