[IT-SecNots] [Security-news] Webform - Moderately critical - Cross-site scripting - SA-CONTRIB-2026-162

[security-news AT drupal.org]

View online: https://www.drupal.org/sa-contrib-2026-162

Project: Webform [1]
Project machine name: webform
Date: 2026-September-23
Security risk: *Moderately critical* 13 ∕ 25
AC:Basic/A:User/CI:Some/II:Some/E:Proof/TD:Uncommon [2]
Vulnerability: Cross-site scripting

Affected versions: <6.2.12 || >=6.3.0 <6.3.1
CVE IDs: CVE-2026-96367
Description: 
The Webform module allows site builders to create forms, collect submissions,
and configure access to forms and submission data.

The module does not sufficiently restrict access to the custom attributes
YAML editor. Users with permission to create or edit webforms (but without
permission to edit webform source) may be able to add custom attributes,
leading to cross-site scripting.

This vulnerability is mitigated by the fact that an attacker must have a role
with permission to create or edit webforms.

Solution: 
Install the latest version:

 * If you use the 6.2.x branch of Webform upgrade to Webform 6.2.12 [3].
 * If you use the 6.3.x branch of Webform, upgrade to Webform 6.3.1 [4].

Reported By: 
 * Mitch Portier (arkener) [5]

Fixed By: 
 * Dan Chadwick (danchadwick) [6]
 * Jacob Rockowitz (jrockowitz) [7]
 * Liam Morland (liam morland) [8]

Coordinated By: 
 * Swan Kalata (akalata) [9] of the Drupal Security Team
 * Bram Driesen (bramdriesen) [10] of the Drupal Security Team
 * Damien McKenna (damienmckenna) [11] of the Drupal Security Team
 * Juraj Nemec (poker10) [12] of the Drupal Security Team
 * Pierre Rudloff (prudloff) [13] of the Drupal Security Team
 * Jess  (xjm) [14] of the Drupal Security Team

------------------------------------------------------------------------------
Contribution record [15]

[1] https://www.drupal.org/project/webform
[2] https://www.drupal.org/security-team/risk-levels
[3] https://www.drupal.org/project/webform/releases/6.2.12
[4] https://www.drupal.org/project/webform/releases/6.3.1
[5] https://www.drupal.org/u/arkener
[6] https://www.drupal.org/u/danchadwick
[7] https://www.drupal.org/u/jrockowitz
[8] https://www.drupal.org/u/liam-morland
[9] https://www.drupal.org/u/akalata
[10] https://www.drupal.org/u/bramdriesen
[11] https://www.drupal.org/u/damienmckenna
[12] https://www.drupal.org/u/poker10
[13] https://www.drupal.org/u/prudloff
[14] https://www.drupal.org/u/xjm
[15]  
https://new.drupal.org/contribution-record?source_link=https%3A//www.drupal.org/node/3611221

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