This module allows you to configure your Drupal site as a SAML 2.0 Service Provider so that users can authenticate through an external identity provider.
Impact
This module allows you to configure your Drupal site as a SAML 2.0 Service Provider so that users can authenticate through an external identity provider.
Source excerpt · OSVThe vulnerability is mitigated by the fact that an attacker must be able to submit a crafted SAML response to the affected site.
Affected packages
Start with the recorded fix for your release branch. Check your installed version and test compatibility before upgrading. Fixing this advisory does not rule out other vulnerabilities in the release.
| Affected range | Recorded fix |
|---|---|
| Earlier releases before 3.2.0Ecosystem versions | 3.2.0 |
Version evidence: OSV · DRUPAL-CONTRIB-2026-145
View original version evidence (0 explicit versions)
Original source description
This module allows you to configure your Drupal site as a SAML 2.0 Service Provider so that users can authenticate through an external identity provider.
The module does not properly restrict which signature algorithm may be used to validate a SAML assertion, allowing the algorithm to be influenced by the incoming response rather than being tied to the type of key configured for the Identity Provider (IdP).
The vulnerability is mitigated by the fact that an attacker must be able to submit a crafted SAML response to the affected site.