[IT-SecNots] [Security-news] Webform - Moderately critical - Access bypass - SA-CONTRIB-2026-174

[security-news AT drupal.org]

View online: https://www.drupal.org/sa-contrib-2026-174

Project: Webform [1]
Project machine name: webform
Date: 2026-September-23
Security risk: *Moderately critical* 11 ∕ 25
AC:Basic/A:None/CI:Some/II:None/E:Theoretical/TD:Uncommon [2]
Vulnerability: Access bypass

Affected versions: <6.2.12 || >=6.3.0 <6.3.1
CVE IDs: CVE-2026-96356
Description: 
The Webform module allows site builders to create forms, collect submissions,
and configure access to forms and submission data.

Webform did not sufficiently guard user-specific access rules against a
malformed saved configuration. Under certain site-specific conditions, an
access rule intended to grant submission access only to selected user
accounts could also grant access to anonymous users.

This vulnerability is mitigated by the fact that the bypass depends on
malformed saved access-rule configuration.

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: 
 * Adam Bramley (acbramley) [5]
 * enyug [6]

Fixed By: 
 * 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
 * cilefen  (cilefen) [11] of the Drupal Security Team
 * Greg Knaddison (greggles) [12] of the Drupal Security Team
 * Lee Rowlands (larowlan) [13] of the Drupal Security Team
 * Juraj Nemec (poker10) [14] of the Drupal Security Team
 * Jess  (xjm) [15] of the Drupal Security Team

------------------------------------------------------------------------------
Contribution record [16]

[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/acbramley
[6] https://www.drupal.org/u/enyug
[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/cilefen
[12] https://www.drupal.org/u/greggles
[13] https://www.drupal.org/u/larowlan
[14] https://www.drupal.org/u/poker10
[15] https://www.drupal.org/u/xjm
[16]  
https://new.drupal.org/contribution-record?source_link=https%3A//www.drupal.org/node/3597025

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