Vulnerability advisory

GHSA-rgx6-rjj4-c388

ckeditor4 vulnerable to cross-site scripting

Published Jun 21, 2021Updated Dec 10, 2025OSV record ↗

Also known as BIT-drupal-2021-33829CVE-2021-33829DRUPAL-CORE-2021-003

Severity

CVSS 3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Affected versions

ckeditor4 npm

All ckeditor4 advisories →

Affected	Fixed in
`4.14.0` to before 4.16.1	`4.16.1`Advisories →

drupal/core Packagist

All drupal/core advisories →

Affected	Fixed in
`7.0.0` to before 7.80	`7.80`Advisories →
`8.0.0` to before 8.9.16	`8.9.16`Advisories →
Also listed as affected (160) `8.0.0` `8.0.1` `8.0.2` `8.0.3` `8.0.4` `8.0.5` `8.0.6` `8.1.0` `8.1.0-beta1` `8.1.0-beta2` `8.1.0-rc1` `8.1.1` `8.1.10` `8.1.2` `8.1.3` `8.1.4` `8.1.5` `8.1.6` `8.1.7` `8.1.8` `8.1.9` `8.2.0` `8.2.0-beta1` `8.2.0-beta2` `8.2.0-beta3` `8.2.0-rc1` `8.2.0-rc2` `8.2.1` `8.2.2` `8.2.3` `8.2.4` `8.2.5` `8.2.6` `8.2.7` `8.2.8` `8.3.0` `8.3.0-alpha1` `8.3.0-beta1` `8.3.0-rc1` `8.3.0-rc2` `8.3.1` `8.3.2` `8.3.3` `8.3.4` `8.3.5` `8.3.6` `8.3.7` `8.3.8` `8.3.9` `8.4.0` `8.4.0-alpha1` `8.4.0-beta1` `8.4.0-rc1` `8.4.0-rc2` `8.4.1` `8.4.2` `8.4.3` `8.4.4` `8.4.5` `8.4.6` `8.4.7` `8.4.8` `8.5.0` `8.5.0-alpha1` `8.5.0-beta1` `8.5.0-rc1` `8.5.1` `8.5.10` `8.5.11` `8.5.12` `8.5.13` `8.5.14` `8.5.15` `8.5.2` `8.5.3` `8.5.4` `8.5.5` `8.5.6` `8.5.7` `8.5.8` `8.5.9` `8.6.0` `8.6.0-alpha1` `8.6.0-beta1` `8.6.0-beta2` `8.6.0-rc1` `8.6.1` `8.6.10` `8.6.11` `8.6.12` `8.6.13` `8.6.14` `8.6.15` `8.6.16` `8.6.17` `8.6.18` `8.6.2` `8.6.3` `8.6.4` `8.6.5` `8.6.6` `8.6.7` `8.6.8` `8.6.9` `8.7.0` `8.7.0-alpha1` `8.7.0-alpha2` `8.7.0-beta1` `8.7.0-beta2` `8.7.0-rc1` `8.7.1` `8.7.10` `8.7.11` `8.7.12` `8.7.13` `8.7.14` `8.7.2` `8.7.3` `8.7.4` `8.7.5` `8.7.6` `8.7.7` `8.7.8` `8.7.9` `8.8.0` `8.8.0-alpha1` `8.8.0-beta1` `8.8.0-rc1` `8.8.1` `8.8.10` `8.8.11` `8.8.12` `8.8.2` `8.8.3` `8.8.4` `8.8.5` `8.8.6` `8.8.7` `8.8.8` `8.8.9` `8.9.0` `8.9.0-beta1` `8.9.0-beta2` `8.9.0-beta3` `8.9.0-rc1` `8.9.1` `8.9.10` `8.9.11` `8.9.12` `8.9.13` `8.9.14` `8.9.15` `8.9.2` `8.9.3` `8.9.4` `8.9.5` `8.9.6` `8.9.7` `8.9.8` `8.9.9`
`9.0.0` to before 9.0.14	`9.0.14`Advisories →
Also listed as affected (14) `9.0.0` `9.0.1` `9.0.10` `9.0.11` `9.0.12` `9.0.13` `9.0.2` `9.0.3` `9.0.4` `9.0.5` `9.0.6` `9.0.7` `9.0.8` `9.0.9`
`9.1.0` to before 9.1.9	`9.1.9`Advisories →
Also listed as affected (9) `9.1.0` `9.1.1` `9.1.2` `9.1.3` `9.1.4` `9.1.5` `9.1.6` `9.1.7` `9.1.8`

drupal/drupal Packagist

All drupal/drupal advisories →

Affected	Fixed in
`7.0.0` to before 7.80	`7.80`Advisories →
`8.0.0` to before 8.9.16	`8.9.16`Advisories →
Also listed as affected (160) `8.0.0` `8.0.1` `8.0.2` `8.0.3` `8.0.4` `8.0.5` `8.0.6` `8.1.0` `8.1.0-beta1` `8.1.0-beta2` `8.1.0-rc1` `8.1.1` `8.1.10` `8.1.2` `8.1.3` `8.1.4` `8.1.5` `8.1.6` `8.1.7` `8.1.8` `8.1.9` `8.2.0` `8.2.0-beta1` `8.2.0-beta2` `8.2.0-beta3` `8.2.0-rc1` `8.2.0-rc2` `8.2.1` `8.2.2` `8.2.3` `8.2.4` `8.2.5` `8.2.6` `8.2.7` `8.2.8` `8.3.0` `8.3.0-alpha1` `8.3.0-beta1` `8.3.0-rc1` `8.3.0-rc2` `8.3.1` `8.3.2` `8.3.3` `8.3.4` `8.3.5` `8.3.6` `8.3.7` `8.3.8` `8.3.9` `8.4.0` `8.4.0-alpha1` `8.4.0-beta1` `8.4.0-rc1` `8.4.0-rc2` `8.4.1` `8.4.2` `8.4.3` `8.4.4` `8.4.5` `8.4.6` `8.4.7` `8.4.8` `8.5.0` `8.5.0-alpha1` `8.5.0-beta1` `8.5.0-rc1` `8.5.1` `8.5.10` `8.5.11` `8.5.12` `8.5.13` `8.5.14` `8.5.15` `8.5.2` `8.5.3` `8.5.4` `8.5.5` `8.5.6` `8.5.7` `8.5.8` `8.5.9` `8.6.0` `8.6.0-alpha1` `8.6.0-beta1` `8.6.0-beta2` `8.6.0-rc1` `8.6.1` `8.6.10` `8.6.11` `8.6.12` `8.6.13` `8.6.14` `8.6.15` `8.6.16` `8.6.17` `8.6.18` `8.6.2` `8.6.3` `8.6.4` `8.6.5` `8.6.6` `8.6.7` `8.6.8` `8.6.9` `8.7.0` `8.7.0-alpha1` `8.7.0-alpha2` `8.7.0-beta1` `8.7.0-beta2` `8.7.0-rc1` `8.7.1` `8.7.10` `8.7.11` `8.7.12` `8.7.13` `8.7.14` `8.7.2` `8.7.3` `8.7.4` `8.7.5` `8.7.6` `8.7.7` `8.7.8` `8.7.9` `8.8.0` `8.8.0-alpha1` `8.8.0-beta1` `8.8.0-rc1` `8.8.1` `8.8.10` `8.8.11` `8.8.12` `8.8.2` `8.8.3` `8.8.4` `8.8.5` `8.8.6` `8.8.7` `8.8.8` `8.8.9` `8.9.0` `8.9.0-beta1` `8.9.0-beta2` `8.9.0-beta3` `8.9.0-rc1` `8.9.1` `8.9.10` `8.9.11` `8.9.12` `8.9.13` `8.9.14` `8.9.15` `8.9.2` `8.9.3` `8.9.4` `8.9.5` `8.9.6` `8.9.7` `8.9.8` `8.9.9`
`9.0.0` to before 9.0.14	`9.0.14`Advisories →
Also listed as affected (14) `9.0.0` `9.0.1` `9.0.10` `9.0.11` `9.0.12` `9.0.13` `9.0.2` `9.0.3` `9.0.4` `9.0.5` `9.0.6` `9.0.7` `9.0.8` `9.0.9`
`9.1.0` to before 9.1.9	`9.1.9`Advisories →
Also listed as affected (9) `9.1.0` `9.1.1` `9.1.2` `9.1.3` `9.1.4` `9.1.5` `9.1.6` `9.1.7` `9.1.8`

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.