[IT-SecNots] [Security-news] Token Content Access - Moderately critical - Access bypass - SA-CONTRIB-2026-090

[security-news AT drupal.org]

View online: https://www.drupal.org/sa-contrib-2026-090

Project: Token Content Access [1]
Date: 2026-July-29
Security risk: *Moderately critical* 10 ∕ 25
AC:Complex/A:None/CI:Some/II:None/E:Theoretical/TD:Uncommon [2]
Vulnerability: Access bypass

Affected versions: <3.1.2
CVE IDs: CVE-2026-18259
Description: 
The Token Content Access module enables site administrators to provide access
to content using access tokens.

The module does not sufficiently protect access token comparison in some
cases. This could allow a persistent attacker to use a timing attack to guess
a valid access token and bypass access restrictions for content protected by
this module.

This vulnerability is mitigated by the fact that an attacker must know or
discover a URL for content protected by Token Content Access, and exploiting
the issue requires measuring timing differences in token comparison
responses.

Solution: 
Install the latest version:

 * If you use the Token Content Access module for Drupal 10.x/11.x, upgrade
   to Token Content Access 3.1.2 [3]

Reported By: 
 * Robin  (robincs) [4]

Fixed By: 
 * Kyrylo Loboda (lobodakyrylo) [5]

Coordinated By: 
 * Bram Driesen (bramdriesen) [6] of the Drupal Security Team
 * cilefen  (cilefen) [7] of the Drupal Security Team
 * Greg Knaddison (greggles) [8] of the Drupal Security Team
 * Juraj Nemec (poker10) [9] of the Drupal Security Team
 * Swan Kalata (akalata) [10] of the Drupal Security Team

------------------------------------------------------------------------------
Contribution record [11]

[1] https://www.drupal.org/project/tca
[2] https://www.drupal.org/security-team/risk-levels
[3] https://www.drupal.org/project/tca/releases/3.1.2
[4] https://www.drupal.org/u/robincs
[5] https://www.drupal.org/u/lobodakyrylo
[6] https://www.drupal.org/u/bramdriesen
[7] https://www.drupal.org/u/cilefen
[8] https://www.drupal.org/u/greggles
[9] https://www.drupal.org/u/poker10
[10] https://www.drupal.org/u/akalata
[11]  
https://new.drupal.org/contribution-record?source_link=https%3A//www.drupal.org/node/3611483

_______________________________________________
Security-news mailing list -- security-news AT drupal.org
To unsubscribe send an email to security-news-leave AT drupal.org
Unsubscribe at