Keycloak - Open Redirect

A misconfiguration flaw was found in Keycloak. This issue can allow an attacker to redirect users to an arbitrary URL if a 'Valid Redirect URI' is set to http://localhost or http://127.0.0.1, enabling sensitive information such as authorization codes to be exposed to the attacker, potentially...

Concrete CMS 安全漏洞

Concrete CMS is an open-source content management system designed for teams. Concrete CMS versions 9.5.0 and earlier have security vulnerabilities. These vulnerabilities stem from an oversight in the handling of OAuth 2.0 authorization codes, which bypasses account status checks. This could...

CVE-2026-41213 @node-oauth/oauth2-server: PKCE code_verifier ABNF not enforced in token exchange allows brute-force redemption of intercepted authorization codes

@node-oauth/oauth2-server is a module for implementing an OAuth2 server in Node.js. The token exchange path accepts RFC7636-invalid codeverifier values including one-character strings for S256 PKCE flows. Because short/weak verifiers are accepted and failed verifier attempts do not consume the...

CVE-2026-41213

The CVE concerns @node-oauth/oauth2-server, a Node.js OAuth2 server module. The token exchange path accepts RFC7636-invalid code_verifier values for S256 PKCE flows (including one-character verifiers). The underlying cause is that ABNF enforcement for code_verifier is not performed during token e...

Improper Isolation or Compartmentalization

Overview Affected versions of this package are vulnerable to Improper Isolation or Compartmentalization due to improper type and namespace isolation in the SingleUseObjectProvider. An attacker can obtain unauthorized access by forging authorization codes, which may result in the creation of...

Improper Isolation or Compartmentalization

Overview org.keycloak:keycloak-services is an open source identity and access management solution for modern applications and services. Affected versions of this package are vulnerable to Improper Isolation or Compartmentalization due to improper type and namespace isolation in the...

EUVD-2026-18208

A flaw was found in Keycloak. The SingleUseObjectProvider, a global key-value store, lacks proper type and namespace isolation. This vulnerability allows an unauthenticated attacker to forge authorization codes. Successful exploitation can lead to the creation of admin-capable access tokens,...

Keycloak: Privilege escalation via forged authorization codes due to SingleUseObjectProvider isolation flaw

A flaw was found in Keycloak. The SingleUseObjectProvider, a global key-value store, lacks proper type and namespace isolation. This vulnerability allows an unauthenticated attacker to forge authorization codes. Successful exploitation can lead to the creation of admin-capable access tokens,...

GHSA-HJ93-H7PG-FH6V Keycloak: Privilege escalation via forged authorization codes due to SingleUseObjectProvider isolation flaw

A flaw was found in Keycloak. The SingleUseObjectProvider, a global key-value store, lacks proper type and namespace isolation. This vulnerability allows an unauthenticated attacker to forge authorization codes. Successful exploitation can lead to the creation of admin-capable access tokens,...

keycloak: Keycloak: Privilege escalation via forged authorization codes due to SingleUseObjectProvider isolation flaw

A flaw was found in Keycloak. The SingleUseObjectProvider, a global key-value store, lacks proper type and namespace isolation. This vulnerability allows an unauthenticated attacker to forge authorization codes. Successful exploitation can lead to the creation of admin-capable access tokens,...

keycloak: Keycloak: Privilege escalation via forged authorization codes due to SingleUseObjectProvider isolation flaw

A flaw was found in Keycloak. The SingleUseObjectProvider, a global key-value store, lacks proper type and namespace isolation. This vulnerability allows an unauthenticated attacker to forge authorization codes. Successful exploitation can lead to the creation of admin-capable access tokens,...

CVE-2026-4282

A flaw was found in Keycloak. The SingleUseObjectProvider, a global key-value store, lacks proper type and namespace isolation. This vulnerability allows an unauthenticated attacker to forge authorization codes. Successful exploitation can lead to the creation of admin-capable access tokens,...

CVE-2026-4282 Keycloak: keycloak: privilege escalation via forged authorization codes due to singleuseobjectprovider isolation flaw

A flaw was found in Keycloak. The SingleUseObjectProvider, a global key-value store, lacks proper type and namespace isolation. This vulnerability allows an unauthenticated attacker to forge authorization codes. Successful exploitation can lead to the creation of admin-capable access tokens,...

CVE-2026-4282

A flaw was found in Keycloak. The SingleUseObjectProvider, a global key-value store, lacks proper type and namespace isolation. This vulnerability allows an unauthenticated attacker to forge authorization codes. Successful exploitation can lead to the creation of admin-capable access tokens,...

CVE-2026-4282

CVE-2026-4282 describes a flaw in Keycloak where the SingleUseObjectProvider is not properly isolated by type and namespace. An unauthenticated attacker can forge authorization codes, potentially leading to creation of admin-capable access tokens and privilege escalation. The available documents ...

CVE-2026-4282 Keycloak: keycloak: privilege escalation via forged authorization codes due to singleuseobjectprovider isolation flaw

A flaw was found in Keycloak. The SingleUseObjectProvider, a global key-value store, lacks proper type and namespace isolation. This vulnerability allows an unauthenticated attacker to forge authorization codes. Successful exploitation can lead to the creation of admin-capable access tokens,...

Keycloak 安全漏洞

Keycloak is an open-source identity and access management solution developed by Keycloak. Keycloak has a security vulnerability, which stems from the lack of proper type and namespace isolation in SingleUseObjectProvider. This vulnerability could allow unverified attackers to forge authorization...

PT-2026-29729

Name of the Vulnerable Software and Affected Versions Keycloak affected versions not specified Description A flaw exists in Keycloak where the SingleUseObjectProvider, a global key-value store, lacks proper type and namespace isolation. This allows an unauthenticated attacker to forge authorizati...

PT-2026-29798

Summary SignalK Server contains a code-level vulnerability in its OIDC login and logout handlers where the unvalidated HTTP Host header is used to construct the OAuth2 redirect uri. Because the redirectUri configuration is silently unset by default, an attacker spoof the Host header to steal OAut...

GO-2026-4689 Tinyauth's OIDC authorization codes are not bound to client on token exchange in github.com/steveiliop56/tinyauth

Tinyauth's OIDC authorization codes are not bound to client on token exchange in github.com/steveiliop56/tinyauth. NOTE: The source advisory for this report contains additional versions that could not be automatically mapped to standard Go module versions. If this is causing false-positive report...