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🛡️ DRUPAL-CORE-2021-011 — core (CVE-2021-41165 +1 more)

⚪ Unknown ✅ No Known Exploit OSV
N/A
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

The Drupal project uses the [CKEditor](https://github.com/ckeditor/ckeditor4) library for WYSIWYG editing. CKEditor has released [a security update that impacts Drupal](https://ckeditor.com/cke4/release/CKEditor-4.17.0), along with a [hotfix for that update](https://ckeditor.com/cke4/release/CKEditor-4.17.1).

Vulnerabilities are possible if Drupal is configured to allow use of the CKEditor library for WYSIWYG editing. An attacker that can create or edit content (even without access to CKEditor themselves) may be able to exploit one or more Cross-Site Scripting (XSS) vulnerabilities to target users with access to the WYSIWYG CKEditor, including site admins with privileged access.

For more information, see CKEditor's security advisories:

  • [CVE-2021-41165: HTML comments vulnerability allowing to execute JavaScript code](https://github.com/ckeditor/ckeditor4/security/advisories/GHSA-7h26-63m7-qhf2)
  • [CVE-2021-41164: Advanced Content Filter (ACF) vulnerability allowing to execute JavaScript code using malformed HTML](https://github.com/ckeditor/ckeditor4/security/advisories/GHSA-pvmx-g8h5-cprj)

This advisory is not covered by [Drupal Steward](/steward).

Affected software

DRUPAL-CORE-2021-011 is recorded against 1 package.

  • drupal/core (from 9.2.0 up to 9.2.9)

Timeline and source

Published on 17 November 2021 and last revised on 10 December 2025. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

www.drupal.org (Web)

Other advisories for this package

drupal/core has other advisories on record. If you are patching this one, these are worth checking on the same host:

Details

Severity Unknown
CVSS Score N/A
CVSS Vector N/A
CWE N/A
Public Exploit ✅ No
Source OSV
Published 2021-11-17
Updated 2026-08-20
Modified 2025-12-10
Fix URL N/A

Affected Packages

Software From version Fixed in
drupal/core 9.2.0 9.2.9

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ⓘ Data Notice: The information presented above has been compiled from publicly available internet sources. Boteraser aggregates this data solely for informational purposes and does not independently classify, evaluate, or endorse any findings about the vulnerabilities listed. The accuracy and completeness of this information is the sole responsibility of the original publishers. Boteraser and its operators accept no liability for any decisions made based on this data.

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