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...

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...

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...

EUVD-2026-53858

In Apache CXF's DefaultEncryptingCodeDataProvider, a captured authorization code can be redeemed an unlimited number of times due to a flaw in the implementation of the removeCodeGrant functionality. This violates the RFC requirement that "The authorization code MUST NOT be used more than once."...

CVE-2026-68079

A flaw in the DefaultEncryptingCodeDataProvider component of Apache CXF allows a remote attacker to redeem a captured authorization code an unlimited number of times. This is caused by a defect in the removeCodeGrant functionality, which fails to properly invalidate used authorization codes, viol...

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...

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...

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...

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...