CVE-2026-73179

Improper enforcement of single-use authorization code semantics in the JPA OAuth2 authorization code grant provider in Apache CXFallows a remote attacker to obtain multiple valid access tokens from a single authorization code via concurrent token exchange requests that race the non-atomic...

EUVD-2026-95695

Improper enforcement of single-use authorization code semantics in the JPA OAuth2 authorization code grant provider in Apache CXFallows a remote attacker to obtain multiple valid access tokens from a single authorization code via concurrent token exchange requests that race the non-atomic...

CVE-2026-73311

CVE-2026-73311: OAuth2 authorization code replay XenForo before 2.3.13 allows an OAuth2 authorization code to be redeemed more than once. What happens The authorization-code grant loads a code, verifies its time-based validity, and creates a token pair. The successful path does not delete the cod...

PT-2026-102981

Name of the Vulnerable Software and Affected Versions oauthlib affected versions not specified Description A timing side-channel exists in the PKCE implementation of the Authorization Code Grant flow. The functions code challenge method plain and code challenge method s256 in the file...

Time-of-check Time-of-use (TOCTOU) Race Condition

Overview better-auth is a The most comprehensive authentication library for TypeScript. Affected versions of this package are vulnerable to Time-of-check Time-of-use TOCTOU Race Condition through a race condition in the authorizationcode grant handler. An attacker can obtain multiple valid access...

NPM: @better-auth/oauth-provider's OAuth authorization-code grant allows concurrent redemption when two token requests race the find-then-delete primitive

NPM: @better-auth/oauth-provider's OAuth authorization-code grant allows concurrent redemption when two token requests race the find-then-delete primitive vulnerability discovered by ? in WordPress Npm better-auth versions 1.6.11...

PT-2026-35315

Summary The token exchange path accepts RFC7636-invalid code verifier values including one-character strings for S256 PKCE flows. Because short/weak verifiers are accepted and failed verifier attempts do not consume the authorization code, an attacker who intercepts an authorization code can...

EUVD-2024-1035

Malicious code in bioql PyPI...

CVE-2024-22258

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...

CVE-2024-42476

In the OAuth library for nim prior to version 0.11, the Authorization Code grant and Implicit grant both rely on the "state" parameter to prevent cross-site request forgery CSRF attacks where a resource owner might have their session associated with protected resources belonging to an attacker...

CVE-2024-42476 oauth CSRF vulnerability

In the OAuth library for nim prior to version 0.11, the Authorization Code grant and Implicit grant both rely on the state parameter to prevent cross-site request forgery CSRF attacks where a resource owner might have their session associated with protected resources belonging to an attacker. Whe...

CVE-2024-42476: Cross-Site Request Forgery (CSRF)

In the OAuth library for nim prior to version 0.11, the Authorization Code grant and Implicit grant both rely on the state parameter to prevent cross-site request forgery CSRF attacks where a resource owner might have their session associated with protected resources belonging to an attacker. Whe...

PKCE Downgrade Attack

spring-security-oauth2-authorization-server is vulnerable to PKCE Downgrade. The vulnerability is due to improper handling of PKCE authorization when a Confidential Client requests an Authorization Code Grant. Note that this vulnerability only applies to Confidential Clients, Public Clients are...

GHSA-X637-X8P3-5P22 Improper Authentication in Spring Authorization Server

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...

CVE-2024-22258

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...

UBUNTU-CVE-2024-22258

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...

CVE-2024-22258

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...

CVE-2024-22258

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...

CVE-2024-22258: Use of Externally-Controlled Input to Select Classes or Code

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...

Denial Of Service (DoS)

org.springframework.security:spring-security-oauth2-client is vulnerable to denial of service DoS attacks. An attacker is able to cause resource exhaustion via sending multiple requests initiating the authorization request for the authorization code grant using a single session or multiple...