### ImpactA remote attacker may be able to bypass SAML authentication on a website using passport-saml. A successful attack requires that the attacker is in possession of an arbitrary IDP signed XML element. Depending on the IDP used, fully unauthenticated attacks (e.g without access to a valid user) might also be feasible if generation of a signed message can be triggered.### PatchesUsers should upgrade to passport-saml 3.2.2 or newer. The issue was also present in the beta releases of `node-saml` before v4.0.0-beta.5.### WorkaroundsDisable SAML authentication.### References_Are there any links users can visit to find out more?_### For more informationIf you have any questions or comments about this advisory:* Open a discussion in the [node-saml repo](https://github.com/node-saml/node-saml/discussions)### Credits* Felix Wilhelm of Google Project Zero