Filtered by vendor Redhat
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Filtered by product Build Of Keycloak
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Total
62 CVE
| CVE | Vendors | Products | Updated | CVSS v3.1 |
|---|---|---|---|---|
| CVE-2026-7307 | 1 Redhat | 2 Build Keycloak, Build Of Keycloak | 2026-06-03 | 7.5 High |
| A flaw was found in Keycloak. A remote, unauthenticated attacker can send a specially crafted XML input to the Security Assertion Markup Language (SAML) endpoint. This malicious input can cause high CPU usage and worker thread starvation, leading to a Denial of Service (DoS) where the server becomes unavailable. | ||||
| CVE-2026-7504 | 1 Redhat | 2 Build Keycloak, Build Of Keycloak | 2026-06-03 | 8.1 High |
| A flaw was found in Keycloak's URL validation logic during redirect operations. By crafting a malicious request, an attacker could bypass validation to redirect users to unauthorized URLs, potentially leading to the exposure of sensitive information within the domain or facilitating further attacks. This vulnerability specifically affects Keycloak clients configured with a wildcard (*) in the "Valid Redirect URIs" field and requires user interaction to be successfully exploited. The issue stems from a discrepancy in how Keycloak and the underlying Java URI implementation handle the user-info component of a URL. If a malicious redirect URL is constructed using multiple @ characters in the user-info section, Java's URI parser fails to extract the user-info, leaving only the raw authority field. Consequently, Keycloak's validation check fails to detect the malformed user-info, falls back to a wildcard comparison, and incorrectly permits the malicious redirect. | ||||
| CVE-2026-7507 | 1 Redhat | 2 Build Keycloak, Build Of Keycloak | 2026-06-03 | 7.5 High |
| A session fixation vulnerability was found in Keycloak's login-actions endpoints. An unauthenticated attacker could exploit this flaw by pre-creating an authentication session and tricking a victim into visiting a maliciously crafted link. By leveraging the /login-actions/restart endpoint—which processes session handles without adequate CSRF protection or cookie ownership validation—an attacker can reset the authentication flow state. This causes Single Sign-On (SSO) to authenticate the victim transparently upon clicking the link, allowing the attacker to hijack the required-action form without needing the victim's credentials. A successful exploit could lead to complete account takeover, including highly privileged administrative accounts. | ||||
| CVE-2026-37979 | 1 Redhat | 2 Build Keycloak, Build Of Keycloak | 2026-06-03 | 6.5 Medium |
| A flaw was found in Keycloak. This access control vulnerability in Keycloak's OpenID Connect (OIDC) token introspection endpoint allows a confidential client to bypass audience restrictions. An attacker-controlled client with valid credentials can retrieve sensitive token claims intended for other resource servers, compromising the confidentiality of lightweight access tokens. This issue can be exploited remotely by any confidential client in the realm with valid credentials. | ||||
| CVE-2026-7571 | 1 Redhat | 2 Build Keycloak, Build Of Keycloak | 2026-06-03 | 7.1 High |
| 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 that should not be available. This vulnerability can also lead to the exposure of these access tokens in server logs, proxy logs, and HTTP Referrer headers, resulting in sensitive information disclosure. | ||||
| CVE-2026-9798 | 1 Redhat | 2 Build Keycloak, Build Of Keycloak | 2026-06-03 | 4.3 Medium |
| A flaw was found in Keycloak, an open-source identity and access management solution. When a user account is temporarily locked due to repeated failed login attempts, an attacker with valid client credentials can exploit the Client-Initiated Backchannel Authentication (CIBA) flow to bypass this brute-force protection. This allows continued authentication attempts and token issuance even when the account should be locked, potentially enabling further unauthorized access attempts. | ||||
| CVE-2026-9796 | 1 Redhat | 3 Build Keycloak, Build Of Keycloak, Keycloak | 2026-06-03 | 6.5 Medium |
| A flaw was found in Keycloak. An authenticated administrator with the `manage-clients` role can exploit a Time-of-check to time-of-use (TOCTOU) vulnerability in the name-based admin role checks. This allows the attacker to escalate their privileges to `realm-admin` for all users within the realm, granting them extensive control over the system. The composite role relationship persists even after the attacker's own permissions are revoked and across system reboots. | ||||
| CVE-2026-9795 | 1 Redhat | 2 Build Keycloak, Build Of Keycloak | 2026-06-03 | 7.3 High |
| A flaw was found in Keycloak's Fine-Grained Admin Permissions (FGAPv2) feature. An administrator with limited client management permissions can exploit this vulnerability to assign any realm role, including highly privileged roles, to a client's scope mapping. This bypasses intended security controls, allowing the injected role to be projected into a user's authentication token when they access the modified client. This could lead to unauthorized privilege escalation within the Keycloak realm. | ||||
| CVE-2026-2575 | 2 Keycloak, Redhat | 3 Keycloak, Build Keycloak, Build Of Keycloak | 2026-06-03 | 5.3 Medium |
| A flaw was found in Keycloak. An unauthenticated remote attacker can trigger an application level Denial of Service (DoS) by sending a highly compressed SAMLRequest through the SAML Redirect Binding. The server fails to enforce size limits during DEFLATE decompression, leading to an OutOfMemoryError (OOM) and subsequent process termination. This vulnerability allows an attacker to disrupt the availability of the service. | ||||
| CVE-2026-9793 | 1 Redhat | 3 Build Keycloak, Build Of Keycloak, Keycloak | 2026-06-03 | 5.9 Medium |
| A flaw was found in Keycloak. When a JSON Web Encryption (JWE) encrypted request object is submitted, Keycloak may incorrectly process unsigned claims if the decrypted content is raw JSON, bypassing the configured signature policy. This allows a remote attacker to submit unauthorized claims, leading to a compromise of data integrity within the OpenID Connect (OIDC) authorization flow. While a redirect URI allowlist acts as a compensating control, this vulnerability violates OIDC Core and Financial-grade API (FAPI) signing requirements. | ||||
| CVE-2026-9689 | 1 Redhat | 2 Build Keycloak, Build Of Keycloak | 2026-06-03 | 4.2 Medium |
| A flaw was found in Keycloak, an open-source identity and access management solution. When a client application is configured to accept broad redirect Uniform Resource Identifiers (URIs), a remote attacker can manipulate the authentication process by crafting a special web address. If a user clicks this link, the client application might incorrectly prioritize attacker-controlled information over legitimate data. This vulnerability, known as HTTP parameter pollution, could allow an attacker to bypass security measures or gain unauthorized access to resources. | ||||
| CVE-2026-37980 | 1 Redhat | 2 Build Keycloak, Build Of Keycloak | 2026-06-02 | 6.9 Medium |
| A flaw was found in Keycloak, specifically in the organization selection login page. A remote attacker with `manage-realm` or `manage-organizations` administrative privileges can exploit a Stored Cross-Site Scripting (XSS) vulnerability. This flaw occurs because the `organization.alias` is placed into an inline JavaScript `onclick` handler, allowing a crafted JavaScript payload to execute in a user's browser when they view the login page. Successful exploitation enables arbitrary JavaScript execution, potentially leading to session theft, unauthorized account actions, or further attacks against users of the affected realm. | ||||
| CVE-2026-3911 | 1 Redhat | 2 Build Keycloak, Build Of Keycloak | 2026-05-07 | 2.7 Low |
| A flaw was found in Keycloak. An authenticated user with the view-users role could exploit a vulnerability in the UserResource component. By accessing a specific administrative endpoint, this user could improperly retrieve user attributes that were configured to be hidden. This unauthorized information disclosure could expose sensitive user data. | ||||
| CVE-2025-7784 | 1 Redhat | 5 Build Keycloak, Build Of Keycloak, Jboss Enterprise Application Platform and 2 more | 2026-05-06 | 6.5 Medium |
| A flaw was found in the Keycloak identity and access management system when Fine-Grained Admin Permissions(FGAPv2) are enabled. An administrative user with the manage-users role can escalate their privileges to realm-admin due to improper privilege enforcement. This vulnerability allows unauthorized elevation of access rights, compromising the intended separation of administrative duties and posing a security risk to the realm. | ||||
| CVE-2026-1529 | 1 Redhat | 2 Build Keycloak, Build Of Keycloak | 2026-04-18 | 8.1 High |
| A flaw was found in Keycloak. An attacker can exploit this vulnerability by modifying the organization ID and target email within a legitimate invitation token's JSON Web Token (JWT) payload. This lack of cryptographic signature verification allows the attacker to successfully self-register into an unauthorized organization, leading to unauthorized access. | ||||
| CVE-2026-1486 | 1 Redhat | 2 Build Keycloak, Build Of Keycloak | 2026-04-17 | 8.8 High |
| A flaw was found in Keycloak. A vulnerability exists in the jwt-authorization-grant flow where the server fails to verify if an Identity Provider (IdP) is enabled before issuing tokens. The issuer lookup mechanism (lookupIdentityProviderFromIssuer) retrieves the IdP configuration but does not filter for isEnabled=false. If an administrator disables an IdP (e.g., due to a compromise or offboarding), an entity possessing that IdP's signing key can still generate valid JWT assertions that Keycloak accepts, resulting in the issuance of valid access tokens. | ||||
| CVE-2026-3872 | 1 Redhat | 2 Build Keycloak, Build Of Keycloak | 2026-04-16 | 7.3 High |
| A flaw was found in Keycloak. This issue allows an attacker, who controls another path on the same web server, to bypass the allowed path in redirect Uniform Resource Identifiers (URIs) that use a wildcard. A successful attack may lead to the theft of an access token, resulting in information disclosure. | ||||
| CVE-2026-4282 | 1 Redhat | 2 Build Keycloak, Build Of Keycloak | 2026-04-16 | 7.4 High |
| 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, resulting in privilege escalation. | ||||
| CVE-2026-4325 | 1 Redhat | 2 Build Keycloak, Build Of Keycloak | 2026-04-16 | 5.3 Medium |
| A flaw was found in Keycloak. The SingleUseObjectProvider, a global key-value store, lacks proper type and namespace isolation. This vulnerability allows an attacker to delete arbitrary single-use entries, which can enable the replay of consumed action tokens, such as password reset links. This could lead to unauthorized access or account compromise. | ||||
| CVE-2026-4634 | 1 Redhat | 2 Build Keycloak, Build Of Keycloak | 2026-04-16 | 7.5 High |
| A flaw was found in Keycloak. An unauthenticated attacker can exploit this vulnerability by sending a specially crafted POST request with an excessively long scope parameter to the OpenID Connect (OIDC) token endpoint. This leads to high resource consumption and prolonged processing times, ultimately resulting in a Denial of Service (DoS) for the Keycloak server. | ||||