Keycloak: Access token disclosure and implicit flow bypass via forged client data

A flaw was found in Keycloak. A low-privilege user, with knowledge of user credentials and client ID, can bypass a security control intended to disable the implicit flow in OpenID Connect OIDC clients. By manipulating client data during a session restart, an attacker can obtain an access token th...

GHSA-HQ3P-W4XV-X7VP Keycloak: Access token disclosure and implicit flow bypass via forged client data

A flaw was found in Keycloak. A low-privilege user, with knowledge of user credentials and client ID, can bypass a security control intended to disable the implicit flow in OpenID Connect OIDC clients. By manipulating client data during a session restart, an attacker can obtain an access token th...

CVE-2026-7571

A flaw was found in Keycloak. A low-privilege user, with knowledge of user credentials and client ID, can bypass a security control intended to disable the implicit flow in OpenID Connect OIDC clients. By manipulating client data during a session restart, an attacker can obtain an access token th...

CVE-2026-7571

A flaw was found in Keycloak. A low-privilege user, with knowledge of user credentials and client ID, can bypass a security control intended to disable the implicit flow in OpenID Connect OIDC clients. By manipulating client data during a session restart, an attacker can obtain an access token th...

EUVD-2026-30888

A flaw was found in Keycloak. A low-privilege user, with knowledge of user credentials and client ID, can bypass a security control intended to disable the implicit flow in OpenID Connect OIDC clients. By manipulating client data during a session restart, an attacker can obtain an access token th...

CVE-2026-7571 Keycloak: keycloak: access token disclosure and implicit flow bypass via forged client data

A flaw was found in Keycloak. A low-privilege user, with knowledge of user credentials and client ID, can bypass a security control intended to disable the implicit flow in OpenID Connect OIDC clients. By manipulating client data during a session restart, an attacker can obtain an access token th...

CVE-2026-7571

Keycloak vulnerability CVE-2026-7571 allows a low-privilege user with knowledge of user credentials and client ID to bypass a security control that disables implicit flow in OpenID Connect clients. By manipulating forged client data during a session restart, an attacker can obtain an access token...

CVE-2026-7571 Keycloak: keycloak: access token disclosure and implicit flow bypass via forged client data

A flaw was found in Keycloak. A low-privilege user, with knowledge of user credentials and client ID, can bypass a security control intended to disable the implicit flow in OpenID Connect OIDC clients. By manipulating client data during a session restart, an attacker can obtain an access token th...

CVE-2026-7571

A flaw was found in Keycloak. A low-privilege user, with knowledge of user credentials and client ID, can bypass a security control intended to disable the implicit flow in OpenID Connect OIDC clients. By manipulating client data during a session restart, an attacker can obtain an access token th...

PT-2026-41881

Name of the Vulnerable Software and Affected Versions Keycloak affected versions not specified Description A security control intended to disable the implicit flow in OpenID Connect OIDC clients can be bypassed. A low-privilege user with knowledge of user credentials and client ID can manipulate...

Keycloak security vulnerabilities

Keycloak is an open-source identity and access management solution developed by Keycloak. Keycloak has a security vulnerability, which stems from the possibility for low-privilege users to bypass security controls and disable the implicit flow of OIDC clients, potentially leading to the leakage o...

CVE-2026-7571: External Control of Assumed-Immutable Web Parameter

A flaw was found in Keycloak. A low-privilege user, with knowledge of user credentials and client ID, can bypass a security control intended to disable the implicit flow in OpenID Connect OIDC clients. By manipulating client data during a session restart, an attacker can obtain an access token th...

Implicit Bearer Token Injection

github.com/kyverno/kyverno is vulnerable to Implicit Bearer Token Injection. The vulnerability is due to the apiCall service helper automatically injecting the Kyverno controller's Authorization: Bearer service account token into outbound requests when no authorization header is explicitly...

Authlib OIDC Implicit/Hybrid Authorization Vulnerable to Open Redirect

Summary An unauthenticated open redirect in Authlib's OpenIDImplicitGrant and OpenIDHybridGrant authorization endpoint lets a remote attacker cause the authorization server to issue an HTTP 302 to an attacker-chosen URL by submitting an authorization request that omits the openid scope. Details...

GHSA-R95X-QFJJ-FJJ2 Authlib OIDC Implicit/Hybrid Authorization Vulnerable to Open Redirect

Summary An unauthenticated open redirect in Authlib's OpenIDImplicitGrant and OpenIDHybridGrant authorization endpoint lets a remote attacker cause the authorization server to issue an HTTP 302 to an attacker-chosen URL by submitting an authorization request that omits the openid scope. Details...

Improper Enforcement of Behavioral Workflow

Overview Affected versions of this package are vulnerable to Improper Enforcement of Behavioral Workflow via the starttls function. An attacker can intercept and manipulate the communication by injecting a crafted response before the client completes sending the command, causing the connection to...

PT-2026-40589

Name of the Vulnerable Software and Affected Versions Authlib versions prior to 1.6.12 Authlib versions prior to 1.7.1 Description An unauthenticated open redirect exists in the authorization endpoint of the OpenIDImplicitGrant and OpenIDHybridGrant components. A remote attacker can cause the...

CVE-2026-31638

In the Linux kernel, the following vulnerability has been resolved: rxrpc: Only put the call ref if one was acquired rxrpcinputpacketonconn can process a to-client packet after the current client call on the channel has already been torn down. In that case chan-call is NULL, rxrpctrygetcall retur...

EUVD-2026-25531

In the Linux kernel, the following vulnerability has been resolved: rxrpc: Only put the call ref if one was acquired rxrpcinputpacketonconn can process a to-client packet after the current client call on the channel has already been torn down. In that case chan-call is NULL, rxrpctrygetcall retur...

BIT-KYVERNO-2026-40868 kyverno apicall servicecall implicit bearer token injection leaks kyverno serviceaccount token

Kyverno is a policy engine designed for cloud native platform engineering teams. Prior to 1.16.4, kyverno’s apiCall servicecall helper implicitly injects Authorization: Bearer ... using the kyverno controller serviceaccount token when a policy does not explicitly set an Authorization header...