CVE-2021-33829

Published: 9 June 2021

A cross-site scripting (XSS) vulnerability in the HTML Data Processor in CKEditor 4 4.14.0 through 4.16.x before 4.16.1 allows remote attackers to inject executable JavaScript code through a crafted comment because --!> is mishandled.

Priority

Cvss 3 Severity Score

6.1

Score breakdown

Status

Package	Release	Status
ckeditor Launchpad, Ubuntu, Debian	groovy	Ignored (end of life, was needed)
	trusty	Does not exist
	upstream	Released (4.16.0+dfsg-2)
	xenial	Released (4.5.7+dfsg-2ubuntu0.16.04.1~esm1) Available with Ubuntu Pro
	impish	Not vulnerable (4.16.0+dfsg-2)
	hirsute	Ignored (end of life)
	bionic	Released (4.5.7+dfsg-2ubuntu0.18.04.1)
	focal	Released (4.12.1+dfsg-1ubuntu0.1)
	jammy	Not vulnerable (4.16.0+dfsg-2)

Severity score breakdown

Parameter	Value
Base score	6.1
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	Required
Scope	Changed
Confidentiality	Low
Integrity impact	Low
Availability impact	None
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

References

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