CVE-2026-59358

Cloud Foundry UAA (v3.7.0 to v79.6.0) and CF Deployment (up to v60.4.0) are vulnerable to an Improper Authentication (CWE-287) flaw in the OAuth token endpoint. The system fails to verify if a Bearer credential is a legitimate client secret, instead accepting any valid access token where the clie...

keycloak: Keycloak: Denial of Service via excessive processing of OpenID Connect scope parameters

A flaw was found in Keycloak. An unauthenticated attacker can exploit this vulnerability by sending a specially crafted POST request with an excessively long scope parameter to the OpenID Connect OIDC token endpoint. This leads to high resource consumption and prolonged processing times, ultimate...

CVE-2026-59358 - UAA OAuth Token Endpoint Vulnerability allows user access token reuse for client_credentials grant type. | Cloud Foundry

Severity High CVSS score: 7.6 High CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N Vendor Cloud Foundry Foundation Versions Affected Severity is High unless otherwise noted. UAA – All versions from UAA v3.7.0 to v79.6.0 inclusive; CF Deployment – All versions to v60.4.0 inclusive...

Apache Kafka Client - Arbitrary File Read

Apache Kafka Client contains arbitrary file read and server-side request forgery caused by untrusted configuration of sasl.oauthbearer.token.endpoint.url and sasl.oauthbearer.jwks.endpoint.url, letting attackers read files or send requests to unintended locations, exploit requires untrusted party...

CVE-2026-73309

CVE-2026-73309: Empty OAuth2 credentials bypass XenForo before 2.3.13 can skip OAuth2 client-secret and PKCE verification when an empty string reaches the token endpoint. What happens The endpoint checks whether clientsecret and codeverifier keys exist, then performs the comparisons only when the...

CVE-2026-73310

CVE-2026-73310: OAuth2 redirect URI not bound to authorization code XenForo before 2.3.13 does not bind an OAuth2 authorization code to the redirect URI used when that code was issued. What happens At the token endpoint, XenForo checks that the submitted redirecturi is somewhere in the client's...

CVE-2026-92289

A flaw was found in lemonldap-ng. When configured to accept either client secrets or Proof Key for Code Exchange PKCE, a security mechanism designed to protect authorization codes, the portal fails to validate client credentials properly for public clients. A remote attacker who intercepts an...

EUVD-2026-83845

A flaw was found in the User-Managed Access UMA implementation of Keycloak. The issue occurs in the authorization token endpoint when processing permission tickets. If two different users own resources with the same name, the system incorrectly merges the permissions from both resources when one...

CVE-2026-94217

A flaw was found in the User-Managed Access UMA implementation of Keycloak. The issue occurs in the authorization token endpoint when processing permission tickets. If two different users own resources with the same name, the system incorrectly merges the permissions from both resources when one...

PT-2026-96048

Name of the Vulnerable Software and Affected Versions Keycloak affected versions not specified Description A flaw exists in the User-Managed Access UMA implementation. The issue occurs at the authorization token endpoint when processing permission tickets. If two different users own resources wit...

CVE-2026-94217: Missing Authorization

A flaw was found in the User-Managed Access UMA implementation of Keycloak. The issue occurs in the authorization token endpoint when processing permission tickets. If two different users own resources with the same name, the system incorrectly merges the permissions from both resources when one...

CVE-2026-90997 Keycloak-services: keycloak: replay protection bypass leads to unauthorized access via database driver semantics mismatch

A flaw was found in Keycloak. When deployed in stateless mode with MySQL or MariaDB, a mismatch in row-count semantics between the database driver and Keycloak's application logic allows an attacker to bypass replay protection. This vulnerability enables an attacker who intercepts single-use...

Incorrect Authorization

Overview apache-airflow-providers-keycloak is a Provider package apache-airflow-providers-keycloak for Apache Airflow Affected versions of this package are vulnerable to Incorrect Authorization in the unauthenticated token endpoint, which accepts a client-credentials grant for any confidential...

EUVD-2026-80324

Apache Airflow Keycloak provider: the unauthenticated token endpoint accepts a client-credentials grant for any confidential client registered in the Keycloak realm, not only the client configured for Airflow. No allowlist restricts which client ids may authenticate, so the credentials of an...

CVE-2026-76187 Apache Airflow Keycloak provider: Any realm client's credentials mint an Airflow session JWT

Apache Airflow Keycloak provider: the unauthenticated token endpoint accepts a client-credentials grant for any confidential client registered in the Keycloak realm, not only the client configured for Airflow. No allowlist restricts which client ids may authenticate, so the credentials of an...

CVE-2026-76187 Apache Airflow Keycloak provider: Any realm client's credentials mint an Airflow session JWT

Apache Airflow Keycloak provider: the unauthenticated token endpoint accepts a client-credentials grant for any confidential client registered in the Keycloak realm, not only the client configured for Airflow. No allowlist restricts which client ids may authenticate, so the credentials of an...

CVE-2026-76187

The apache-airflow-providers-keycloak package is vulnerable to incorrect authorization in its unauthenticated token endpoint. The root cause is the lack of an allowlist, which allows the endpoint to accept a client-credentials grant for any confidential client registered in a shared Keycloak real...

n8n: Per-Resource OAuth Consent Bypass via Unbound Refresh Token Resource Substitution

Impact The OAuth token endpoint bound an authorization code's first access token to the consented resource, but not its refresh token. Refreshing only checked that the requested resource was registered, not that it matched the original grant. An OAuth client approved for one workflow could refres...

GHSA-CW9W-VV67-HF73 n8n: Per-Resource OAuth Consent Bypass via Unbound Refresh Token Resource Substitution

Impact The OAuth token endpoint bound an authorization code's first access token to the consented resource, but not its refresh token. Refreshing only checked that the requested resource was registered, not that it matched the original grant. An OAuth client approved for one workflow could refres...

CVE-2026-86073 n8n: Per-Resource OAuth Consent Bypass via Unbound Refresh Token Resource Substitution

n8n is an open source workflow automation platform. Prior to 2.37.7 and 2.38.1, the OAuth token endpoint bound an authorization code's first access token to the consented resource but did not bind its refresh token. Refreshing checked only that the requested resource was registered, not that it...