[IT-SecNots] [Security-news] Highlight Js syntax highlighter - Critical - Cross-site scripting - SA-CONTRIB-2026-299

[security-news AT drupal.org]

View online: https://www.drupal.org/sa-contrib-2026-299

Project: Highlight Js syntax highlighter [1]
Project machine name: highlight_js
Date: 2026-November-04
Security risk: *Critical* 16 ∕ 25
AC:Basic/A:None/CI:Some/II:Some/E:Theoretical/TD:All [2]
Vulnerability: Cross-site scripting

Affected versions: <1.3.1
CVE IDs: CVE-2026-122068
Description: 
This module enables you to add syntax-highlighted code snippets to content
using CKEditor 5.

The module doesn't sufficiently validate input passed to its CKEditor 5
preview endpoint, leading to a reflected cross-site scripting (XSS)
vulnerability.

Solution: 
Install the latest version:

 * Upgrade to highlight_js 1.3.1 [3].

Reported By: 
 * André Angelantoni (aangel) [4]
 * Drew Webber (mcdruid) [5] of the Drupal Security Team

Fixed By: 
 * Norman Kämper-Leymann (norman.lol) [6]

Coordinated By: 
 * Swan Kalata (akalata) [7] of the Drupal Security Team
 * Juraj Nemec (poker10) [8] of the Drupal Security Team
 * Jess  (xjm) [9] of the Drupal Security Team

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Contribution record [10]

[1] https://www.drupal.org/project/highlight_js
[2] https://www.drupal.org/drupal-security-team/security-risk-levels-defined
[3] https://www.drupal.org/project/highlight_js/releases/1.3.1
[4] https://www.drupal.org/u/aangel
[5] https://www.drupal.org/u/mcdruid
[6] https://www.drupal.org/u/normanlol
[7] https://www.drupal.org/u/akalata
[8] https://www.drupal.org/u/poker10
[9] https://www.drupal.org/u/xjm
[10]  
https://new.drupal.org/contribution-record?source_link=https%3A//www.drupal.org/node/3632339

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