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.
{
"cwe_ids": [
"CWE-287",
"CWE-470"
],
"github_reviewed": true,
"github_reviewed_at": "2024-03-20T17:09:02Z",
"nvd_published_at": "2024-03-20T04:15:08Z",
"severity": "MODERATE"
}