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....