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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

Medium

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