CVE-2024-22258 – Medium – CVE-2024-22258: PKCE Downgrade in Spring Authorization Server

Spring Security Advisory

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.

Specifically, an application is vulnerable when a Confidential Client uses PKCE for the Authorization Code Grant.

An application is not vulnerable when a Public Client uses PKCE for the Authorization Code Grant.

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