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.
| Package (Ecosystem) | Introduced | Fixed | Limit |
|---|---|---|---|
| org.springframework.security:spring-security-oauth2-authorization-server(Maven) | 0 | 1.1.6 | N/A |
| org.springframework.security:spring-security-oauth2-authorization-server(Maven) | 1.2.0 | 1.2.3 | N/A |
CVSS Metrics
