View online: https://www.drupal.org/sa-contrib-2026-248 Project: Shield [1] Project machine name: shield Date: 2026-October-21 Security risk: *Moderately critical* 13 ∕ 25 AC:Basic/A:None/CI:Some/II:None/E:Theoretical/TD:All [2] Vulnerability: Access bypass Affected versions: <1.9.0 CVE IDs: CVE-2026-107256 Description: The Shield module enables you to protect a site behind an HTTP basic authentication prompt, so that an unfinished or non-public site cannot be viewed, crawled or indexed by anonymous visitors. The module doesn't sufficiently limit the number of authentication attempts it will evaluate under the scenario where an anonymous visitor repeatedly submits basic authentication credentials. This vulnerability is mitigated by the fact that the configured Shield credentials must be guessable — a long, randomly generated password is not practically brute forceable — and by the fact that Shield is intended as a supplementary barrier in front of a site rather than the site's user access control systems. Solution: Install the latest version: * If you use the shield module, upgrade to Shield 8.x-1.9 [3] Reported By: * Pierre Rudloff (prudloff) [4] of the Drupal Security Team Fixed By: * Bram Driesen (bramdriesen) [5] of the Drupal Security Team * Merlin Axel Rutz (geek-merlin) [6] * Jakob P (japerry) [7] * Ivo Van Geertruyen (mr.baileys) [8] of the Drupal Security Team * Ra Mänd (ram4nd) [9] provisional member of the Drupal Security Team Coordinated By: * Swan Kalata (akalata) [10] of the Drupal Security Team * Greg Knaddison (greggles) [11] of the Drupal Security Team * Juraj Nemec (poker10) [12] of the Drupal Security Team * Pierre Rudloff (prudloff) [13] of the Drupal Security Team ------------------------------------------------------------------------------ Contribution record [14] [1] https://www.drupal.org/project/shield [2] https://www.drupal.org/drupal-security-team/security-risk-levels-defined [3] https://www.drupal.org/project/shield/releases/8.x-1.9 [4] https://www.drupal.org/u/prudloff [5] https://www.drupal.org/u/bramdriesen [6] https://www.drupal.org/u/geek-merlin [7] https://www.drupal.org/u/japerry [8] https://www.drupal.org/u/mrbaileys [9] https://www.drupal.org/u/ram4nd [10] https://www.drupal.org/u/akalata [11] https://www.drupal.org/u/greggles [12] https://www.drupal.org/u/poker10 [13] https://www.drupal.org/u/prudloff [14] https://new.drupal.org/contribution-record?source_link=https%3A//www.drupal....