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CVE-2021-33829

nvd nistnuclei
Published: Jun 9, 2021Modified: Jun 17, 2026

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6.1
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Exploitability: 2.8 / Impact: 2.7
Source: NVD

Description

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.

Affected (8)

Products: Ckeditor: Ckeditor · Fedoraproject: Fedora · Drupal: Drupal · +1 more
Show all products
Ckeditor: Ckeditor · Fedoraproject: Fedora · Drupal: Drupal · Debian: Debian Linux
Ckeditor
1 product
Ckeditor
Fedoraproject
1 product
Fedora
Drupal
1 product
Drupal
Debian
1 product
Debian Linux
Configuration A
1 vulnerable
Vulnerable SoftwareAffected Versions
Ckeditor
From 4.14.0 to 4.16.1
Configuration B
3 vulnerable
Vulnerable SoftwareAffected Versions
Fedoraproject
Fedora
Version 33
Fedora
Version 34
Fedora
Version 35
Configuration C
3 vulnerable
Vulnerable SoftwareAffected Versions
Drupal
Drupal
From 8.9.0 to 8.9.16
Drupal
From 9.0.0 to 9.0.14
Drupal
From 9.1.0 to 9.1.9
Configuration D
1 vulnerable
Vulnerable SoftwareAffected Versions
Debian Linux
Version 9.0

Related CWEs

CWE-79
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

References (12)

Source: cve@mitre.org
PatchRelease NotesVendor Advisory
Source: cve@mitre.org
Mailing ListThird Party Advisory
Source: cve@mitre.org
Source: cve@mitre.org
Source: cve@mitre.org
Source: cve@mitre.org
PatchThird Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
PatchRelease NotesVendor Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing ListThird Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Source: af854a3a-2127-422b-91ae-364da2661108
Source: af854a3a-2127-422b-91ae-364da2661108
Source: af854a3a-2127-422b-91ae-364da2661108
PatchThird Party Advisory

Timeline

No history available yet.