A vulnerability has been identified in Mendix SAML (Mendix 7 compatible) (All versions < V1.17.0), Mendix SAML (Mendix 8 compatible) (All versions < V2.3.0), Mendix SAML (Mendix 9 compatible, New Track) (All versions < V3.3.1), Mendix SAML (Mendix 9 compatible, Upgrade Track) (All versions < V3.3.0). Affected versions of the module insufficiently protect from packet capture replay. This could allow unauthorized remote attackers to bypass authentication and get access to the application. For compatibility reasons, fix versions still contain this issue, but only when the not recommended, non default configuration option 'Allow Idp Initiated Authentication' is enabled.

A vulnerability has been identified in Mendix SAML Module (Mendix 7 compatible) (All versions < V1.16.6), Mendix SAML Module (Mendix 8 compatible) (All versions < V2.2.2), Mendix SAML Module (Mendix 9 compatible) (All versions < V3.2.3). The affected module is vulnerable to XML External Entity (XXE) attacks due to insufficient input sanitation. This may allow an attacker to disclose confidential data under certain circumstances.

A vulnerability has been identified in Mendix SAML Module (Mendix 7 compatible) (All versions < V1.16.6), Mendix SAML Module (Mendix 8 compatible) (All versions < V2.2.2), Mendix SAML Module (Mendix 9 compatible) (All versions < V3.2.3). In certain configurations SAML module is vulnerable to Cross Site Scripting (XSS) attacks due to insufficient error message sanitation. This could allow an attacker to execute malicious code by tricking users into accessing a malicious link.