Tinyauth vulnerable to TOTP/2FA bypass via OIDC authorize endpoint

Summary The OIDC authorization endpoint allows users with a TOTP-pending session password verified, TOTP not yet completed to obtain authorization codes. An attacker who knows a user's password but not their TOTP secret can obtain valid OIDC tokens, completely bypassing the second factor. Details...

Missing Critical Step in Authentication

Overview Affected versions of this package are vulnerable to Missing Critical Step in Authentication via the OIDC authorize process. An attacker can gain unauthorized access to valid OIDC tokens by leveraging a session where only the password has been verified but the second authentication factor...

Incorrect Authorization

Overview Affected versions of this package are vulnerable to Incorrect Authorization in the token endpoint. An attacker can obtain access tokens for users who have not authorized their application by exchanging intercepted authorization codes issued to other clients. Note: This is only exploitabl...

GHSA-XG2Q-62G2-CVCM Tinyauth's OIDC authorization codes are not bound to client on token exchange

Summary The OIDC token endpoint does not verify that the client exchanging an authorization code is the same client the code was issued to. A malicious OIDC client operator can exchange another client's authorization code using their own client credentials, obtaining tokens for users who never...

EUVD-2026-11679

Tinyauth's OIDC authorization codes are not bound to client on token exchange...

Tinyauth's OIDC authorization codes are not bound to client on token exchange

Summary The OIDC token endpoint does not verify that the client exchanging an authorization code is the same client the code was issued to. A malicious OIDC client operator can exchange another client's authorization code using their own client credentials, obtaining tokens for users who never...

Incorrect Authorization

Overview Affected versions of this package are vulnerable to Incorrect Authorization in the token endpoint. An attacker can obtain access tokens for users who have not authorized their application by exchanging intercepted authorization codes issued to other clients. Note: This is only exploitabl...

PT-2026-25056

Name of the Vulnerable Software and Affected Versions Tinyauth versions prior to 5.0.3 Description Tinyauth is an authentication and authorization server. The OIDC authorization endpoint allows users with a TOTP-pending session password verified, TOTP not yet completed to obtain authorization...

PT-2026-25051

Name of the Vulnerable Software and Affected Versions Backstage versions prior to 0.27.1 Description Backstage, an open framework for building developer portals, has an issue in the experimental OIDC provider within the @backstage/plugin-auth-backend component. Specifically, a redirect URI...

Tinyauth 安全漏洞

Tinyauth is an authentication and authorization server developed by Stavros personally. Versions of Tinyauth prior to 5.0.3 contained security vulnerabilities. These vulnerabilities stemmed from the OIDC token endpoint not verifying the identity of the client requesting the exchange of...

Backstage 输入验证错误漏洞

Backstage is an open-source application developed by Backstage. It serves as an open platform for building developer portals. Versions of Backstage prior to 0.27.1 contained a vulnerability related to input validation errors. This vulnerability stemmed from an experimental OIDC provisioning...

CVE-2026-1524

An edgecase in SSO implementation in Neo4j Enterprise edition versions prior to version 2026.02 can lead to unauthorised access under the following conditions: If a neo4j admin configures two or more OIDC providers AND configures one or more of them to be an authorization provider AND configures...

CVE-2026-31813 Supabase Auth has insecure Apple and Azure authentication with ID tokens

Supabase Auth is a JWT based API for managing users and issuing JWT tokens. Prior to 2.185.0, a vulnerability has been identified that allows an attacker to issue sessions for arbitrary users using specially crafted ID tokens when the Apple or Azure providers are enabled. The attacker issues a...

CVE-2026-1524 Auth misconfiguration when multiple providers enabled

An edgecase in SSO implementation in Neo4j Enterprise edition versions prior to version 2026.02 can lead to unauthorised access under the following conditions: If a neo4j admin configures two or more OIDC providers AND configures one or more of them to be an authorization provider AND configures...

CVE-2026-1524

An edgecase in SSO implementation in Neo4j Enterprise edition versions prior to version 2026.02 can lead to unauthorised access under the following conditions: If a neo4j admin configures two or more OIDC providers AND configures one or more of them to be an authorization provider AND configures...

GO-2026-4656 Pocket ID: OIDC authorization code validation uses AND instead of OR, allowing cross-client token exchange in github.com/pocket-id/pocket-id/backend

Pocket ID: OIDC authorization code validation uses AND instead of OR, allowing cross-client token exchange in github.com/pocket-id/pocket-id/backend...

CVE-2026-28513

Pocket ID is an OIDC provider that allows users to authenticate with their passkeys to your services. Prior to 2.4.0, the OIDC token endpoint rejects an authorization code only when both the client ID is wrong and the code is expired. This allows cross-client code exchange and expired code reuse...

PT-2026-24727

Name of the Vulnerable Software and Affected Versions Neo4j Enterprise edition versions prior to 2026.02 Neo4j Enterprise edition versions prior to 5.26.22 Description An issue in the Single Sign-On SSO implementation in Neo4j Enterprise edition can lead to unauthorized access. This occurs when a...

CVE-2026-28512

Pocket ID is an OIDC provider that allows users to authenticate with their passkeys to your services. From 2.0.0 to before 2.4.0, a flaw in callback URL validation allowed crafted redirecturi values containing URL userinfo @ to bypass legitimate callback pattern checks. If an attacker can trick a...

EUVD-2026-10409

Pocket ID is an OIDC provider that allows users to authenticate with their passkeys to your services. Prior to 2.4.0, the OIDC token endpoint rejects an authorization code only when both the client ID is wrong and the code is expired. This allows cross-client code exchange and expired code reuse...