CVE-2026-12977

Org.wildfly.core/wildfly-server: wildfly: rbac bypass in wildfly deployment-operation handlers leads to privilege escalation

A flaw was found in the deployment-operation family of WildFly Core. Certain handlers, such as upload-deployment-url, lack proper sensitivity classification, allowing an administrator with the restricted "Maintainer" role to read sensitive configuration files. This can lead to the exfiltration of credentials and full administrative control (SuperUser) of the server.

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed

Vendors

Redhat

Products

Fuze 7 Jboss Enterprise Application Platform Jboss Enterprise Application Platform Expansion Pack and 4 more

CVE-2026-89059

Resteasy-core: resteasy: iioimageprovider unbounded image decode (decompression-bomb dos)

A flaw was found in RESTEasy's IIOImageProvider, which decodes attacker-supplied image request bodies without enforcing any limit on the declared image dimensions or pixel count. A remote, unauthenticated attacker can send a small crafted image declaring enormous dimensions to trigger a very large memory allocation, exhausting the JVM heap and resulting in a denial of service.

CVSS 3.1 · 7.5 High EPSS 1.5% KEV · Not listed

Vendors

Redhat

Products

Apache Camel Quarkus Apicurio Registry Build Keycloak and 24 more

CVE-2026-89058

Resteasy-core: resteasy: corsfilter reflects arbitrary origin with credentials under wildcard config

A flaw was found in RESTEasy's CorsFilter, which, when configured to allow all origins ("*"), reflects the request's Origin header back in the Access-Control-Allow-Origin response together with Access-Control-Allow-Credentials: true. This permissive cross-origin policy allows a malicious website to make credentialed cross-origin requests and read authenticated responses from a victim's session, resulting in a loss of confidentiality.

CVSS 3.1 · 7.4 High EPSS < 1% KEV · Not listed

Vendors

Redhat

Products

Apache Camel Quarkus Apicurio Registry Build Keycloak and 24 more

CVE-2026-92358

Keycloak-services: keycloak-services: residual cross-browser account-link proof allows silent re-linking

A flaw was found in the first broker login flow of Keycloak. When a user confirms an account-linking request from a different browser, a temporary proof is created to validate the link. However, this proof is not properly cleared after the link is established or when the user later manually removes the link. An attacker who controls the external identity can exploit this leftover proof to silently re-establish the link and gain unauthorized access to the victims account without any further confirmation.

CVSS 3.1 · 6.4 Medium EPSS < 1% KEV · Not listed

Vendors

Red Hat Redhat

Products

Red Hat Build Of Keycloak 26.4 Build Keycloak Build Of Keycloak and 2 more

CVE-2026-94001

Keycloak-services: keycloak-services: admin credential delete bypasses denied reset-password permission

A flaw was found in the Admin REST API of Keycloak, an open-source identity and access management solution. The endpoint used for deleting user credentials does not correctly check for fine-grained reset-password permissions. This allows a delegated administrator, who should be restricted from resetting passwords, to delete a user's password credentials, resulting in the user being unable to log in.

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed

Vendors

Red Hat Redhat

Products

Red Hat Build Of Keycloak 26.4 Build Keycloak Build Of Keycloak and 2 more

CVE-2026-94213

Keycloak-services: keycloak-services: authorization services policy evaluation endpoint leaks user identity

A flaw was found in the Authorization Services component of Keycloak, an open-source identity and access management solution. The issue occurs in the policy evaluation endpoint, which is used by administrators to test how access policies apply to specific users. Due to missing authorization checks, a delegated administrator with limited viewing privileges can access the full profile and role information of any user in the realm, even if they are not permitted to view user details. This could lead to the exposure of sensitive information such as email addresses and assigned security roles.

CVSS 3.1 · 4.9 Medium EPSS < 1% KEV · Not listed

Vendors

Red Hat Redhat

Products

Red Hat Build Of Keycloak 26.4 Build Keycloak Build Of Keycloak and 2 more

CVE-2026-94215

Keycloak-services: keycloak-services: cross-realm client read/write via request-level cache missing realm ownership check

A flaw was found in the Admin REST API of Keycloak, an open-source identity and access management solution. The issue occurs because the API uses a per-request in-memory cache to resolve clients by their unique identifier without verifying if the client belongs to the realm specified in the request path. This allows an administrator with limited privileges to read or modify sensitive client configurations in the master realm by accessing them through a realm they control. Successful exploitation could lead to the exposure of client credentials or the redirection of administrative login attempts to malicious sites.

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed

Vendors

Red Hat Redhat

Products

Red Hat Build Of Keycloak 26.4 Build Keycloak Build Of Keycloak and 2 more

CVE-2026-94217

Keycloak-services: keycloak-services: uma scope merge across resource owners via resource name collision

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 user requests an authorization token. This allows an attacker to gain access scopes on a victim's resource that were never intended to be shared.

CVSS 3.1 · 3.5 Low EPSS < 1% KEV · Not listed

Vendors

Red Hat Redhat

Products

Red Hat Build Of Keycloak 26.4 Build Keycloak Build Of Keycloak and 2 more

CVE-2026-94218

Keycloak-services: keycloak-services: 2fa setup enforcement bypass via authentication session restart endpoint

A flaw was found in the authentication session management of Keycloak, an identity and access management solution. The issue occurs when an administrator enforces a stronger authentication flow, such as mandatory two-factor authentication (2FA) setup, through a client policy. A user can bypass this requirement by manually visiting a specific session restart web link during the login process. This action clears the internal markers that track the required security steps, allowing the user to log in with only a password and gain access without completing the mandated 2FA setup.

CVSS 3.1 · 3.1 Low EPSS < 1% KEV · Not listed

Vendors

Red Hat Redhat

Products

Red Hat Build Of Keycloak 26.4 Build Keycloak Build Of Keycloak and 2 more

CVE-2026-103112

Keycloak-services: keycloak-services: account takeover via authentication race using reset-credentials path

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.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed

Vendors

Red Hat Redhat

Products

Red Hat Build Of Keycloak 26.4 Build Keycloak Build Of Keycloak and 2 more

CVE-2026-92855

Keycloak-services: keycloak-services: saml broker accepts holder-of-key assertions without proof of key possession

A flaw was found in the SAML identity broker component of Keycloak, which is used to delegate authentication to external identity providers. The issue occurs because the broker fails to verify that a user actually possesses the private key associated with a holder-of-key assertion. An attacker who intercepts a victim signed assertion can replay it to gain unauthorized access and impersonate the victim without needing their private key.

CVSS 3.1 · 7.4 High EPSS < 1% KEV · Not listed

Vendors

Red Hat Redhat

Products

Red Hat Build Of Keycloak 26.4 Build Keycloak Build Of Keycloak and 2 more

CVE-2026-107602

Keycloak-services: keycloak-services: unauthenticated cpu exhaustion via saml 1.1 keyinfo infinite loop

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.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed

Vendors

Red Hat Redhat

Products

Red Hat Build Of Keycloak 26.4 Build Keycloak Build Of Keycloak and 2 more

CVE-2026-92857

Keycloak-services: keycloak-services: dcr protocol mapper config not validated, allowing iat holders to forge sub and aud claims in signed tokens

Keycloak provides a Dynamic Client Registration feature that allows users with specific tokens to register their own applications. A flaw in how Keycloak validates these registration requests allows an attacker to create a malicious application that forges identity information. By mapping their own user profile details to protected fields like the user ID (sub) or intended audience (aud), an attacker can generate signed security tokens that make them appear to be a different user. This could allow an attacker to impersonate other users or gain unauthorized access to services that rely on these tokens for identity verification.

CVSS 3.1 · 8.1 High EPSS < 1% KEV · Not listed

Vendors

Red Hat Redhat

Products

Red Hat Build Of Keycloak 26.4 Build Keycloak Build Of Keycloak and 2 more

CVE-2026-110931

Keycloak-services: keycloak-services: unauthenticated jvm termination via saml 1.1 authoritybinding parsing loop

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.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed

Vendors

Red Hat Redhat

Products

Red Hat Build Of Keycloak 26.4 Build Keycloak Build Of Keycloak and 2 more

CVE-2026-112208

Keycloak-services: keycloak-services: account takeover via stale sso_auth note in organization identity-first login

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.

CVSS 3.1 · 8.1 High EPSS < 1% KEV · Not listed

Vendors

Red Hat Redhat

Products

Red Hat Build Of Keycloak 26.4 Build Keycloak Build Of Keycloak and 2 more

CVE-2026-120984

Keycloak-services: keycloak-services: manage-clients to arbitrary code execution through inline javascript policy import

A flaw was found in the Keycloak server's client management component. When a client is created or imported with authorization services enabled, the system fails to properly clear an internal session attribute used during the setup process. This allows an authenticated attacker with client management permissions to bypass security controls and upload a malicious JavaScript policy, which is then executed on the server when an authorization request is made. Successful exploitation could allow the attacker to run arbitrary code on the server, potentially compromising the entire system.

CVSS 3.1 · 9.1 Critical EPSS < 1% KEV · Not listed

Vendors

Red Hat Redhat

Products

Red Hat Build Of Keycloak 26.4 Build Keycloak Build Of Keycloak and 2 more

CVE-2026-117691

Keycloak-services: keycloak-services: saml redirect binding signature bypass via percent-encoded parameter names

A flaw was found in the SAML HTTP-Redirect binding implementation of Keycloak. The issue occurs because the server processes percent-encoded parameter names (like %53AMLResponse) while the signature verification logic only checks literal parameter names. An attacker can use this discrepancy to provide a crafted, unsigned SAML message that the server processes instead of a legitimately signed one, leading to full account takeover of federated users.

CVSS 3.1 · 9.1 Critical EPSS < 1% KEV · Not listed

Vendors

Red Hat Redhat

Products

Red Hat Build Of Keycloak 26.4 Build Keycloak Build Of Keycloak and 2 more

CVE-2026-19608

Keycloak-services: keycloak-services: name-only group claims let same-name groups satisfy path-specific group policies

A flaw was found in the group policy provider of Keycloak authorization services, which is used to manage fine-grained access control to resources. The issue occurs when the system evaluates group-based policies using tokens that only contain group names rather than full paths. If two groups in different parts of the organization share the same name, a user in the unauthorized group can be mistaken for a member of the authorized group. This can allow a user to gain unauthorized access to protected resources they should not be able to reach.

CVSS 3.1 · 5.3 Medium EPSS < 1% KEV · Not listed

Vendors

Redhat

Products

Build Keycloak Build Of Keycloak Red Hat Single Sign On and 1 more

CVE-2026-114232

Keycloak-services: keycloak-services: uma protection api resourcetype field not validated — cross-owner resource access

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.

CVSS 3.1 · 8.1 High EPSS < 1% KEV · Not listed

Vendors

Red Hat Redhat

Products

Red Hat Build Of Keycloak 26.4 Build Keycloak Build Of Keycloak and 2 more

CVE-2026-110932

Keycloak-services: keycloak-services: unauthenticated persistent disk exhaustion via theme gzip cache

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.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed

Vendors

Red Hat Redhat

Products

Red Hat Build Of Keycloak 26.4 Build Keycloak Build Of Keycloak and 2 more