OpenAM is an open access management solution. In versions 15.0.3 and prior, the `getCustomLoginUrlTemplate` method in RealmOAuth2ProviderSettings.java is vulnerable to template injection due to its usage of user input. Although the developer intended to implement a custom URL for handling login to override the default PingOne Advanced Identity Cloud login page,they did not restrict the `CustomLoginUrlTemplate`, allowing it to be set freely. Commit fcb8432aa77d5b2e147624fe954cb150c568e0b8 introduces `TemplateClassResolver.SAFER_RESOLVER` to disable the resolution of commonly exploited classes in FreeMarker template injection. As of time of publication, this fix is expected to be part of version 15.0.4.

GitHub, Inc. AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

GitHub, Inc. CWE-94

GitHub, Inc. https://github.com/OpenIdentityPlatform/OpenAM/commit/fcb8432aa77d5b2e147624fe954cb150c568e0b8 [No types assigned]

GitHub, Inc. https://github.com/OpenIdentityPlatform/OpenAM/security/advisories/GHSA-7726-43hg-m23v [No types assigned]