"value":"Spring Authorization Server versions 1.0.0 - 1.0.5, 1.1.0 - 1.1.5, 1.2.0 - 1.2.2 and older unsupported versions are susceptible to a PKCE Downgrade Attack for Confidential Clients.\n\nSpecifically, an application is vulnerable when a Confidential Client\u00a0uses PKCE for the Authorization Code Grant.\n\nAn application is not vulnerable when a Public Client\u00a0uses PKCE for the Authorization Code Grant.\n\n"