EUVD-2026-78369

Open Access Management OpenAM is an access management solution. Prior to 16.1.1, AuthorizationCodeGrantTypeHandler requires a codeverifier only when the realm-wide codeVerifierEnforced setting is enabled, even when an authorization code stores a codechallenge. Because that setting is disabled by...

CVE-2026-48717: Improper Authorization

Open Access Management OpenAM is an access management solution. Prior to 16.1.1, AuthorizationCodeGrantTypeHandler requires a codeverifier only when the realm-wide codeVerifierEnforced setting is enabled, even when an authorization code stores a codechallenge. Because that setting is disabled by...

CVE-2026-90474

MCPHub before 1.0.32 contains an authentication bypass vulnerability in its embedded OAuth 2.0 authorization server where client authentication is disabled by default and PKCE enforcement is optional. Attackers who obtain an authorization code through interception can redeem it for access tokens...

CVE-2026-90474 MCPHub before 1.0.32 OAuth 2.0 Authentication Bypass

MCPHub before 1.0.32 contains an authentication bypass vulnerability in its embedded OAuth 2.0 authorization server where client authentication is disabled by default and PKCE enforcement is optional. Attackers who obtain an authorization code through interception can redeem it for access tokens...

CVE-2026-90474

MCPHub before 1.0.32 is affected by an authentication bypass in its embedded OAuth 2.0 authorization server. The root cause is that client authentication is disabled by default and PKCE enforcement is optional , allowing an attacker who intercepts an authorization code to redeem it for an access ...

CVE-2026-90474 MCPHub before 1.0.32 OAuth 2.0 Authentication Bypass

MCPHub before 1.0.32 contains an authentication bypass vulnerability in its embedded OAuth 2.0 authorization server where client authentication is disabled by default and PKCE enforcement is optional. Attackers who obtain an authorization code through interception can redeem it for access tokens...

CVE-2026-90474 MCPHub before 1.0.32 OAuth 2.0 Authentication Bypass

MCPHub before 1.0.32 contains an authentication bypass vulnerability in its embedded OAuth 2.0 authorization server where client authentication is disabled by default and PKCE enforcement is optional. Attackers who obtain an authorization code through interception can redeem it for access tokens...

EUVD-2026-76850

MCPHub before 1.0.32 contains an authentication bypass vulnerability in its embedded OAuth 2.0 authorization server where client authentication is disabled by default and PKCE enforcement is optional. Attackers who obtain an authorization code through interception can redeem it for access tokens...

PT-2026-90637

MCPHub before 1.0.32 contains an authentication bypass vulnerability in its embedded OAuth 2.0 authorization server where client authentication is disabled by default and PKCE enforcement is optional. Attackers who obtain an authorization code through interception can redeem it for access tokens...

Improper Input Validation

Apache CXF is vulnerable to Improper Input Validation. The vulnerability is due to JwtRequestCodeFilter copying security-sensitive claims from a signed request JWT into the authorization parameter map without proper validation, which allows an attacker with a validly signed JWT to replace...

SUSE CVE-2026-26247

Gitea versions before 1.25.5 do not persist the OAuth2 PKCE S256 challenge method correctly during authorization, allowing token exchange without the expected verifier check...

Exploit for CVE-2026-73309

CVE-2026-73309 XenForo before 2.3.13 can skip OAuth2 client-s...

CVE-2026-73309

XenForo before 2.3.13 is vulnerable to an authentication bypass in its OAuth2 token endpoint . An unauthenticated attacker can submit empty strings for the client_secret and code_verifier parameters; because PHP truthy evaluation treats empty strings as falsy, both the client secret check and the...

CVE-2026-73309 XenForo < 2.3.13 Authentication Bypass via OAuth2 Token Endpoint

XenForo before 2.3.13 contains an authentication bypass vulnerability in the OAuth2 token endpoint that allows unauthenticated attackers to obtain valid token pairs by submitting empty values for clientsecret and codeverifier parameters. Attackers can exploit PHP truthy evaluation logic, which...

EUVD-2026-72780

XenForo before 2.3.13 contains an authentication bypass vulnerability in the OAuth2 token endpoint that allows unauthenticated attackers to obtain valid token pairs by submitting empty values for clientsecret and codeverifier parameters. Attackers can exploit PHP truthy evaluation logic, which...

PT-2026-87054

XenForo before 2.3.13 contains an authentication bypass vulnerability in the OAuth2 token endpoint that allows unauthenticated attackers to obtain valid token pairs by submitting empty values for client secret and code verifier parameters. Attackers can exploit PHP truthy evaluation logic, which...

GO-2026-6342 Gitea OAuth2 PKCE S256 verifier bypass in code.gitea.io/gitea

Gitea OAuth2 PKCE S256 verifier bypass in code.gitea.io/gitea...

librest: weak random number generation in PKCE implementation

A flaw was found in librest. The PKCE implementation for OAuth authorization uses the GRand function from the GLib API, a cryptographically insecure pseudo-random number generator. Because the generated "code verifier" lacks sufficient cryptographic entropy, a malicious actor can reverse-engineer...

Important: Red Hat Security Advisory: rest security update

An update for rest is now available for Red Hat Enterprise Linux 10.0 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for...

RHEL 10 : rest (RHSA-2026:62222)

The remote Redhat Enterprise Linux 10 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2026:62222 advisory. The rest packages provide a library for access to the RESTful web services. Security Fixes: librest: weak random number generation in PKCE...