CVE-2026-16089 Keycloak-services: keycloak-services: authorization codes can be retargeted to another client session

A flaw was found in the keycloak-services component of Red Hat Build of Keycloak. The issue occurs because OAuth 2.0 authorization codes are not properly bound to the client that originally requested them. An attacker who can intercept an authorization code can modify it to be redeemed by their o...

CVE-2026-16089 Keycloak-services: keycloak-services: authorization codes can be retargeted to another client session

A flaw was found in the keycloak-services component of Red Hat Build of Keycloak. The issue occurs because OAuth 2.0 authorization codes are not properly bound to the client that originally requested them. An attacker who can intercept an authorization code can modify it to be redeemed by their o...

CVE-2026-16089

The CVE-2026-16089 entry describes a vulnerability in Red Hat Build of Keycloak’s keycloak-services, where OAuth 2.0 authorization codes are not properly bound to the client that requested them. If an attacker can intercept an authorization code, they can modify it to be redeemed by their own cli...

CVE-2026-16089

A flaw was found in the keycloak-services component of Red Hat Build of Keycloak. The issue occurs because OAuth 2.0 authorization codes are not properly bound to the client that originally requested them. An attacker who can intercept an authorization code can modify it to be redeemed by their o...

PT-2026-60770

Name of the Vulnerable Software and Affected Versions Red Hat Build of Keycloak affected versions not specified Description A flaw in the keycloak-services component occurs because OAuth 2.0 authorization codes are not properly bound to the client that originally requested them. This allows an...

CVE-2026-59713 Leantime - OIDC Login CSRF via Unconditional State Verification Stub

Leantime contains an OIDC login CSRF vulnerability in the verifyState method that unconditionally returns true without validating state parameters. Attackers can craft malicious callback URLs with attacker-controlled authorization codes to perform session fixation, logging victims in as the...

CVE-2026-59713 Leantime - OIDC Login CSRF via Unconditional State Verification Stub

Leantime contains an OIDC login CSRF vulnerability in the verifyState method that unconditionally returns true without validating state parameters. Attackers can craft malicious callback URLs with attacker-controlled authorization codes to perform session fixation, logging victims in as the...

Replay Attack

Overview Affected versions of this package are vulnerable to Replay Attack due to improper enforcement of OAuth2 authorization code expiry and single-use requirements in the authorization code process. An attacker can gain unauthorized access by reusing valid authorization codes during the token...

Open Redirect

Overview Affected versions of this package are vulnerable to Open Redirect via the reloadNuxtApp function. An attacker can redirect users to attacker-controlled hosts by injecting protocol-relative paths such as //evil.com, potentially enabling phishing attacks or theft of OAuth authorization...

Concrete CMS security vulnerabilities

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-2026-6334 OAuth authorization code client binding not enforced during token redemption in Mattermost

Mattermost versions 11.5.x = 11.5.1, 10.11.x = 10.11.13 fail to enforce client identity binding during the OAuth authorization code redemption flow which allows an authenticated OAuth client to redeem authorization codes issued to a different client via a crafted token exchange request.. Mattermo...

Mozilla: Taskcluster web-server OAuth2 authorization codes are reusable and the exchange handler checks the wrong expiry column

The Taskcluster web-server's OAuth2 token-exchange handler did not consume authorization codes and did not enforce the authorization-code expiry. A leaked authorization code could be replayed to mint additional bridge access tokens for the original user, past the 10-minute window required by the...

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 @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...

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,...

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...

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,...

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,...

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...