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CVE Vendors Products Updated CVSS v3.1
CVE-2026-15943 1 Redhat 8 Build Keycloak, Build Of Keycloak, Data Grid and 5 more 2026-11-06 5.5 Medium
A flaw was found in the Keycloak keycloak-services component, which handles the management of identity providers. The issue occurs when a delegated administrator updates an OIDC identity provider using a masked client secret sentinel value. Due to improper validation, Keycloak reuses the existing real secret even if security-sensitive fields like the token URL have been changed, allowing an attacker to redirect and capture the secret.
CVE-2026-12388 1 Redhat 2 Build Keycloak, Build Of Keycloak 2026-11-06 6.5 Medium
A flaw was found in the Identity Provider (IdP) mapper component of Keycloak, which is used to manage how user information from external services is mapped to Keycloak users. An administrator with limited permissions to manage identity providers can exploit this flaw by creating a "Hardcoded Role" mapper that assigns high-level administrative roles (like realm-admin) to themselves or others. This allows a restricted administrator to bypass security checks and gain full control over the entire realm.
CVE-2026-82965 2 Red Hat, Redhat 5 Red Hat Build Of Keycloak 26.4, Build Keycloak, Build Of Keycloak and 2 more 2026-11-06 7.5 High
A flaw was found in the SAML implementation of Keycloak, an open-source identity and access management solution. The SAML Artifact Resolution and ECP SOAP endpoints do not properly limit the size or complexity of incoming XML requests. An unauthenticated remote attacker can exploit this by sending specially crafted, large XML messages that cause the server to consume excessive memory. This leads to the application running out of memory and crashing, resulting in a denial of service for all users.
CVE-2026-114232 2 Red Hat, Redhat 5 Red Hat Build Of Keycloak 26.4, Build Keycloak, Build Of Keycloak and 2 more 2026-11-06 8.1 High
A flaw was found in the UserManagedPermissionService of the Keycloak authorization server. The UMA Protection API, which manages user permissions, fails to validate the resourceType field when a user creates a new policy. This allows an attacker to create a policy that applies to resources owned by other users, potentially leading to unauthorized access or modification of sensitive data across the entire realm.
CVE-2026-112208 2 Red Hat, Redhat 5 Red Hat Build Of Keycloak 26.4, Build Keycloak, Build Of Keycloak and 2 more 2026-11-06 8.1 High
A flaw was found in the Organization identity-first login flow of the Keycloak authentication server. Keycloak is an open-source identity and access management solution used to secure modern applications and services. The issue occurs when an attacker who belongs to multiple organizations initiates a login and then switches to a registration or password reset path. During this process, a flag indicating a successful login is not properly cleared when the user is removed from the session. An attacker can then provide a victim's username, and the system incorrectly treats the stale flag as proof of the victim's identity. This allows the attacker to bypass authentication and gain full access to the victim's account and connected applications.
CVE-2026-110932 2 Red Hat, Redhat 5 Red Hat Build Of Keycloak 26.4, Build Keycloak, Build Of Keycloak and 2 more 2026-11-06 7.5 High
A flaw was found in the theme resource endpoint of Keycloak, an open-source identity and access management solution. The issue occurs because the server fails to validate theme names before using them as keys for an on-disk gzip cache. An unauthenticated attacker can exploit this by sending many requests with unique, fabricated theme names, leading to persistent disk space exhaustion that survives server restarts and causes service disruptions.
CVE-2026-110931 2 Red Hat, Redhat 5 Red Hat Build Of Keycloak 26.4, Build Keycloak, Build Of Keycloak and 2 more 2026-11-06 7.5 High
A flaw was found in the SAML 1.1 assertion parser of Keycloak, a tool used for identity and access management. The issue occurs when the parser handles a specific element called AuthorityBinding within an authentication statement. Due to an incomplete fix for a previous vulnerability, the parser can enter an infinite loop that consumes all available memory, causing the entire Keycloak service to crash and become unavailable to users.
CVE-2026-107602 2 Red Hat, Redhat 5 Red Hat Build Of Keycloak 26.4, Build Keycloak, Build Of Keycloak and 2 more 2026-11-06 7.5 High
A flaw was found in the SAML 1.1 XML parsing logic of Keycloak, an open-source identity and access management solution. The issue occurs when the parser encounters unexpected elements within a security token's key information section, causing the processing thread to enter an infinite loop. An unauthenticated remote attacker could exploit this by sending specially crafted requests, leading to 100% CPU usage and a total denial of service that requires a server restart to resolve.
CVE-2026-107123 2 Red Hat, Redhat 5 Red Hat Build Of Keycloak 26.4, Build Keycloak, Build Of Keycloak and 2 more 2026-11-06 7.5 High
A flaw was found in the SAML XML processing component of Keycloak, an open-source identity and access management solution. The issue occurs when the server parses XML documents containing excessively long dateTime or duration values. Because these strings are not properly validated before processing, the XML parser consumes excessive CPU time. An unauthenticated remote attacker can exploit this by sending specially crafted SAML requests to the server, leading to high CPU utilization and a denial of service for all users.
CVE-2026-103112 2 Red Hat, Redhat 5 Red Hat Build Of Keycloak 26.4, Build Keycloak, Build Of Keycloak and 2 more 2026-11-06 7.5 High
A flaw was found in the authentication session handling of the keycloak-services component in Keycloak. The issue occurs because the system fails to verify if an authenticator is valid for the current authentication flow when switching between the standard authentication path and the reset credentials path. An authenticated attacker can exploit this by triggering a race condition during the credential reset process to associate their successful authentication state with another user's session. This can result in the attacker gaining full access to the victim's account and changing their password.
CVE-2026-97847 1 Redhat 2 Build Keycloak, Red Hat Single Sign On 2026-11-06 7.1 High
A flaw was found in the protocol mapper and identity resolution components of Keycloak. The issue occurs when a client manager uses hardcoded-claim mappers to override identity claims in sessionless service-account tokens. Because these tokens lack a session ID, Keycloak may incorrectly resolve the token bearer as a different, highly privileged user based on the manipulated claims. This can allow an attacker with limited client management permissions to impersonate a realm administrator and gain full control over the realm.
CVE-2026-97175 1 Redhat 2 Build Keycloak, Red Hat Single Sign On 2026-11-06 8.8 High
A flaw was found in the idp-auto-link authenticator of the keycloak-services component, which handles user identity federation. The issue occurs when Keycloak automatically links an incoming identity from an external provider to an existing local account based on an email address without verifying if the provider has validated that email. This can allow an attacker to take over a victim's account by using a matching unverified email address at a brokered provider.
CVE-2026-97174 1 Redhat 2 Build Keycloak, Red Hat Single Sign On 2026-11-06 6.8 Medium
A flaw was found in the Client-Initiated Backchannel Authentication (CIBA) implementation of Keycloak. The CIBA endpoint fails to properly validate the sub parameter, allowing it to be stored as an additional request parameter. During the token issuance process, this injected value overwrites the legitimate subject identifier. This allows an attacker to authenticate as themselves but receive security tokens belonging to a different victim user, leading to unauthorized account access.
CVE-2026-96453 1 Redhat 7 Amq Broker, Build Keycloak, Jboss Enterprise Application Platform and 4 more 2026-11-06 8 High
A flaw was found in the Keycloak Admin CLI kcadm tool, which is used by administrators to manage Keycloak servers from the command line. When a custom truststore is provided to verify the server identity, the tool incorrectly accepts any self-signed certificate as long as the hostname matches. This allows a network attacker to impersonate the Keycloak server, steal administrative credentials, and perform unauthorized management actions.
CVE-2026-93998 1 Redhat 7 Amq Broker, Build Keycloak, Jboss Enterprise Application Platform and 4 more 2026-11-06 7.4 High
A flaw was found in the SAML adapter component of Keycloak, which is used to secure applications with SAML-based authentication. The adapter fails to verify that the issuer of a signed SAML assertion matches the expected identity provider configured for the application. If multiple identity providers share the same trusted signing key, an attacker who controls one of those providers can create a validly signed assertion to log into the application as any user, potentially gaining full administrative control.
CVE-2026-93569 2 Io.netty, Redhat 23 Netty-codec-http, Amq Broker, Apache Camel Quarkus and 20 more 2026-11-06 8.2 High
A flaw was found in Netty. A remote unauthenticated attacker can exploit a vulnerability in Netty's HTTP/1 to HTTP/2 conversion process. When an HTTP/1 request includes both an absolute-form request-target and a conflicting Host header, Netty incorrectly prioritizes the Host header for the HTTP/2 :authority field, discarding the original request-target authority. This inconsistency can allow an attacker to bypass security controls in Netty-based proxies or gateways, potentially leading to unauthorized access, cache poisoning, or misrouting of requests.
CVE-2026-93568 2 Io.netty, Redhat 24 Netty-codec-http, Amq Broker, Apache Camel Quarkus and 21 more 2026-11-06 7.5 High
A flaw was found in Netty. A remote attacker could exploit this vulnerability by sending specially crafted HTTP/2 or HTTP/3 Extended CONNECT requests. Netty's HTTP-object conversion path incorrectly processes these requests as regular HTTP/1.1 CONNECT requests, leading to a loss of critical protocol and path information. This misinterpretation can allow attackers to bypass security policies, such as routing or authorization logic, in applications that rely on Netty for HTTP/2 or HTTP/3 communication, resulting in integrity loss.
CVE-2026-93567 2 Io.netty, Redhat 24 Netty-codec-http2, Amq Broker, Apache Camel Quarkus and 21 more 2026-11-06 7.5 High
A flaw was found in Netty's HTTP/2 codec. When converting HTTP/1 CONNECT requests to HTTP/2, the component incorrectly uses the Host header instead of the CONNECT authority-form request-target for the tunnel authority. A remote attacker can exploit this by supplying a different Host header, leading to a malformed HTTP/2 CONNECT request. This can bypass security controls such as tunnel allow-lists or egress policies, resulting in integrity loss.
CVE-2026-93565 2 Red Hat, Redhat 23 Red Hat Amq Broker 7, Amq Broker, Amq Clients and 20 more 2026-11-06 7.5 High
A flaw was found in Netty RtspDecoder. The `RtspMethods.valueOf()` function incorrectly strips trailing control bytes from method tokens in Real-Time Streaming Protocol (RTSP) requests. A remote attacker can exploit this by sending a specially crafted RTSP request, leading to method-token smuggling. This vulnerability allows an attacker to bypass method-based access controls and can also be used to launder malicious requests through Netty-based RTSP proxies, making them appear legitimate to backend systems.
CVE-2026-93564 1 Redhat 20 Amq Broker, Amq Broker 7, Apache Camel Quarkus and 17 more 2026-11-06 7.5 High
A flaw was found in Netty. A reference-count leak in the HAProxy PROXY-v2 message decoder allows a remote, unauthenticated attacker to send specially crafted PROXY-protocol v2 headers. This can lead to memory exhaustion, resulting in a Denial of Service (DoS) for the affected system.