CVE-2026-81637

CVE-2026-81637 is an insufficient session expiration flaw in AshAuthentication (team-alembic, Elixir ecosystem). In AshAuthentication.Strategy.OAuth2.Plug.callback/2, the OAuth2 CSRF state (session_params) is deleted via a rebind inside a with chain, but Elixir's else-block scoping causes every f...

CVE-2026-88952: Improper Authentication

Improper Authentication vulnerability in team-alembic AshAuthentication allows an attacker to be signed in as another user by linking an OAuth2 identity to an account that is not theirs. AshAuthentication.Strategy.OAuth2.UserResolver.resolve/3 matches an existing account using the register action...

CVE-2026-81637: Insufficient Session Expiration

Insufficient Session Expiration vulnerability in team-alembic AshAuthentication allows an attacker who obtains a victim's OAuth2 state value to replay the callback and sign that victim into an attacker-controlled account. AshAuthentication.Strategy.OAuth2.Plug.callback/2 clears the stored...

PT-2026-94293

Name of the Vulnerable Software and Affected Versions ash authentication versions 0.6.0 through 4.14.9 ash authentication versions 5.0.0-rc.0 through 5.0.0-rc.13 Description Insufficient session expiration allows an attacker who obtains a victim's OAuth2 state value to replay the callback and sig...

PT-2026-94373

Name of the Vulnerable Software and Affected Versions ash authentication versions 5.0.0-rc.10 through 5.0.0-rc.13 Description An authentication bypass by spoofing exists in the dynamic oidc strategy. This allows an attacker using one identity-provider connection to be signed in as a local user...

PT-2026-94355

Name of the Vulnerable Software and Affected Versions ash authentication versions 4.14.0 through 4.14.x ash authentication versions 5.0.0-rc.10 through 5.0.0-rc.13 Description An improper authentication issue allows an attacker to sign in as another user by linking an OAuth2 identity to an accoun...

CVE-2026-14916

A JWT signature verification vulnerability affects Kong components that perform JWT validation for MCP OAuth2 or DataKit integrations inside Kong API Gateway Enterprise. The affected code does not properly validate that the JWT signing algorithm is compatible with the type of key used for...

CVE-2026-14916

Kong API Gateway Enterprise is affected by a JWT algorithm-confusion vulnerability in components that validate JWTs for MCP OAuth2 or DataKit integrations. The root cause is a failure to verify that the JWT signing algorithm is compatible with the type of key used for verification, allowing an un...

CVE-2026-14916 Kong API Gateway Enterprise: JWT Algorithm-Confusion

A JWT signature verification vulnerability affects Kong components that perform JWT validation for MCP OAuth2 or DataKit integrations inside Kong API Gateway Enterprise. The affected code does not properly validate that the JWT signing algorithm is compatible with the type of key used for...

CVE-2026-14916 Kong API Gateway Enterprise: JWT Algorithm-Confusion

A JWT signature verification vulnerability affects Kong components that perform JWT validation for MCP OAuth2 or DataKit integrations inside Kong API Gateway Enterprise. The affected code does not properly validate that the JWT signing algorithm is compatible with the type of key used for...

EUVD-2026-80389

A JWT signature verification vulnerability affects Kong components that perform JWT validation for MCP OAuth2 or DataKit integrations inside Kong API Gateway Enterprise. The affected code does not properly validate that the JWT signing algorithm is compatible with the type of key used for...

CVE-2026-14916: Improper Handling of Unexpected Data Type

A JWT signature verification vulnerability affects Kong components that perform JWT validation for MCP OAuth2 or DataKit integrations inside Kong API Gateway Enterprise. The affected code does not properly validate that the JWT signing algorithm is compatible with the type of key used for...

PT-2026-93431

Name of the Vulnerable Software and Affected Versions Kong API Gateway Enterprise affected versions not specified Description A JWT signature verification issue exists in Kong components that handle JWT validation for MCP OAuth2 or DataKit integrations. The system fails to properly validate wheth...

Linux Distros Unpatched Vulnerability : CVE-2026-46623

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Open Access Management OpenAM is an access management solution. Prior to 16.1.1, the OAuth2 authentication module updates an existing local account with profile...

Nezha: OAuth2 redirect_uri Host header injection regression when dashboard_host is empty

Summary Nezha v2.2.3 regresses the GHSA-9rc6-8cjv-rcvx host header injection fix for deployments where the new dashboardhost setting is empty. In that configuration, /api/v1/oauth2/provider again reflects the request Host header into the OAuth2 redirecturi sent to the identity provider, even if...

GHSA-RF68-8GJR-36Q7 Nezha: OAuth2 redirect_uri Host header injection regression when dashboard_host is empty

Summary Nezha v2.2.3 regresses the GHSA-9rc6-8cjv-rcvx host header injection fix for deployments where the new dashboardhost setting is empty. In that configuration, /api/v1/oauth2/provider again reflects the request Host header into the OAuth2 redirecturi sent to the identity provider, even if...

CVE-2026-55375

canto-saas-api (PHP library for the Canto SaaS API) prior to 3.0.0 sends OAuth credentials (app_id, app_secret, refresh_token, code) in the URL query string of token POST requests rather than the request body. Because request URLs are commonly recorded in access logs, proxy logs, and APM traces, ...

rabbitmq-server: rabbitmq-server: Denial of service via atom exhaustion in OAuth2 JWT scope parsing

A flaw was found in rabbitmq-server where its OAuth2 authentication backend improperly converts token scope values into Erlang runtime atoms. In deployments where an Identity Provider IdP allows users to influence scope contents within their signed JSON Web Tokens JWTs, an authenticated attacker...

rabbitmq-server: rabbitmq-server: OAuth2 silent verify_none fallback for JWKS fetch

A flaw was found in rabbitmq-server. When the OAuth2 plugin fetches JWKS and no CA bundle is available, TLS verification silently falls back to verifynone. A man-in-the-middle attacker can forge the JWKS response, causing the broker to accept arbitrary JWTs...

CVE-2026-62280

Open Access Management OpenAM is an access management solution. From 13.0.0 until 16.1.2, the OAuth2 authorize endpoint's display=wap consent page reflects request-derived values through ConsentRequiredResource and wap/authorize.ftl without HTML escaping. An attacker can induce a user with an...