Open Redirector in spring-security-oauth2 (CVE-2019-3778) 

Issue date: 29-04-2019
Affects versions: 13.0, 12.6

Issue ID: SECURITY-101


Affected Product Version(s)
12.6.1, 13.0.0





Spring Security OAuth, versions 2.3 prior to 2.3.5, and 2.2 prior to 2.2.4, and 2.1 prior to 2.1.4, and 2.0 prior to 2.0.17, and older unsupported versions could be susceptible to an open redirector attack that can leak an authorization code. A malicious user or attacker can craft a request to the authorization endpoint using the authorization code grant type, and specify a manipulated redirection URI via the "redirect_uri" parameter. This can cause the authorization server to redirect the resource owner user-agent to a URI under the control of the attacker with the leaked authorization code.

This vulnerability exposes applications that meet all of the following requirements:

  • Act in the role of an Authorization Server (e.g. @EnableAuthorizationServer)
  • Uses the DefaultRedirectResolver in the AuthorizationEndpoint


This vulnerability does not expose applications that:

  • Act in the role of an Authorization Server and uses a different RedirectResolver implementation other than DefaultRedirectResolver
  • Act in the role of a Resource Server only (e.g. @EnableResourceServer)
  • Act in the role of a Client only (e.g. @EnableOAuthClient)

This vulnerability is classified with severity critical. Although default usage of this library within the Bloomreach Experience Manager product is not vulnerable, project specific usages of this third-party code within a customer project may be vulnerable. 



Every customer is strongly advised to upgrade as soon as possible to the latest maintenance release as indicated above, or higher. This can be done by simply incrementing the version number of the parent POM for the implementation project.