CVE-2024-22258

Summary

CVE-2024-22258 is a newly disclosed vulnerability affecting Spring Authorization Server versions 1.0.0 to 1.0.5, 1.1.0 to 1.1.5, and 1.2.0 to 1.2.2, as well as older unsupported versions. The issue lies in the susceptibility to a PKCE (Proof Key for Code Exchange) Downgrade Attack for Confidential Clients. This vulnerability is significant because during a Confidential Client's use of PKCE for the Authorization Code Grant, an attacker can exploit the weakness, potentially leading to unauthorized access. Public Clients, however, are not affected by this issue when using PKCE for Authorization Code Grants.

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