Keycloak
by Red Hat
Source repositories
CVEs (129)
| CVE | Vendor / Product | Sev | Risk | CVSS | EPSS | KEV | Published | Description |
|---|---|---|---|---|---|---|---|---|
| CVE-2023-0264 | Med | 0.26 | 5.0 | 0.01 | Aug 4, 2023 | A flaw was found in Keycloaks OpenID Connect user authentication, which may incorrectly authenticate requests. An authenticated attacker who could obtain information from a user request within the same realm could use that data to impersonate the victim and generate new session… | ||
| CVE-2020-1698 | Med | 0.26 | 5.0 | 0.00 | May 11, 2020 | A flaw was found in keycloak in versions before 9.0.0. A logged exception in the HttpMethod class may leak the password given as parameter. The highest threat from this vulnerability is to data confidentiality. | ||
| CVE-2026-9801 | Med | 0.25 | 4.9 | 0.00 | May 28, 2026 | A flaw was found in Keycloak. A remote attacker with high privileges, such as a realm administrator configuring a malicious Lightweight Directory Access Protocol (LDAP) server or an attacker compromising an upstream LDAP server, could exploit this vulnerability. By sending a… | ||
| CVE-2026-37978 | Med | 0.25 | 4.9 | 0.00 | May 19, 2026 | A flaw was found in Keycloak. A low-privilege administrator with the 'view-clients' role can exploit this by invoking the 'evaluate-scopes' Admin API endpoints with an arbitrary user ID (userId) parameter. This vulnerability allows for cross-role personally identifiable… | ||
| CVE-2026-0871 | Med | 0.25 | 4.9 | 0.00 | Feb 27, 2026 | A flaw was found in Keycloak. An administrator with `manage-users` permission can bypass the "Only administrators can view" setting for unmanaged attributes, allowing them to modify these attributes. This improper access control can lead to unauthorized changes to user profiles,… | ||
| CVE-2023-0091 | Low | 0.25 | 3.8 | 0.00 | Jan 13, 2023 | A flaw was found in Keycloak, where it did not properly check client tokens for possible revocation in its client credential flow. This flaw allows an attacker to access or modify potentially sensitive information. | ||
| CVE-2019-3868 | Low | 0.25 | 3.8 | 0.01 | Apr 24, 2019 | Keycloak up to version 6.0.0 allows the end user token (access or id token JWT) to be used as the session cookie for browser sessions for OIDC. As a result an attacker with access to service provider backend could hijack user’s browser session. | ||
| CVE-2026-18569 | Low | 0.24 | 3.7 | 0.00 | Aug 4, 2026 | A flaw was found in the backchannel logout endpoint of the keycloak-services component, which is part of the Red Hat Build of Keycloak. This component handles authentication and session management for applications. The issue occurs when an OIDC identity provider is configured to… | ||
| CVE-2020-10776 | Med | 0.24 | 4.8 | 0.01 | Nov 17, 2020 | A flaw was found in Keycloak before version 12.0.0, where it is possible to add unsafe schemes for the redirect_uri parameter. This flaw allows an attacker to perform a Cross-site scripting attack. | ||
| CVE-2019-10157 | Med | 0.24 | 4.7 | 0.00 | Jun 12, 2019 | It was found that Keycloak's Node.js adapter before version 4.8.3 did not properly verify the web token received from the server in its backchannel logout . An attacker with local access could use this to construct a malicious web token setting an NBF parameter that could… | ||
| CVE-2023-6134 | Med | 0.23 | 4.6 | 0.01 | Dec 14, 2023 | A flaw was found in Keycloak that prevents certain schemes in redirects, but permits them if a wildcard is appended to the token. This issue could allow an attacker to submit a specially crafted request leading to cross-site scripting (XSS) or further attacks. This flaw is the… | ||
| CVE-2026-9791 | Med | 0.21 | 4.3 | 0.00 | May 28, 2026 | A flaw was found in Keycloak. An authenticated user with existing organization membership can exploit this flaw by accessing user-facing APIs, such as the account API or by requesting an OpenID Connect (OIDC) token with the 'organization' scope. This allows organization metadata… | ||
| CVE-2026-8830 | Med | 0.21 | 4.3 | 0.00 | May 19, 2026 | A flaw was found in Keycloak. An authenticated user can bypass configured WebAuthn policies during credential registration by manipulating client-side JavaScript. This occurs because the server-side processAction() fails to validate that the newly created credential's… | ||
| CVE-2021-3856 | Med | 0.21 | 4.3 | 0.01 | Aug 26, 2022 | ClassLoaderTheme and ClasspathThemeResourceProviderFactory allows reading any file available as a resource to the classloader. By sending requests for theme resources with a relative path from an external HTTP client, the client will receive the content of random files if… | ||
| CVE-2020-10734 | Low | 0.21 | 3.3 | 0.00 | Feb 11, 2021 | A vulnerability was found in keycloak in the way that the OIDC logout endpoint does not have CSRF protection. Versions shipped with Red Hat Fuse 7, Red Hat Single Sign-on 7, and Red Hat Openshift Application Runtimes are believed to be vulnerable. | ||
| CVE-2014-3655 | Med | 0.21 | 4.3 | 0.00 | Nov 13, 2019 | JBoss KeyCloak is vulnerable to soft token deletion via CSRF | ||
| CVE-2026-9689 | Med | 0.20 | 4.2 | 0.00 | May 27, 2026 | 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… | ||
| CVE-2020-27826 | Med | 0.20 | 4.2 | 0.01 | May 28, 2021 | A flaw was found in Keycloak before version 12.0.0 where it is possible to update the user's metadata attributes using Account REST API. This flaw allows an attacker to change its own NameID attribute to impersonate the admin user for any particular application. | ||
| CVE-2020-10686 | Med | 0.20 | 4.1 | 0.01 | May 4, 2020 | A flaw was found in Keycloak version 8.0.2 and 9.0.0, and was fixed in Keycloak version 9.0.1, where a malicious user registers as oneself. The attacker could then use the remove devices form to post different credential IDs and possibly remove MFA devices for other users. | ||
| CVE-2025-5416 | Low | 0.18 | 2.7 | 0.00 | Jun 20, 2025 | A vulnerability has been identified in Keycloak that could lead to unauthorized information disclosure. While it requires an already authenticated user, the /admin/serverinfo endpoint can inadvertently provide sensitive environment information. |
- risk 0.26cvss 5.0epss 0.01
A flaw was found in Keycloaks OpenID Connect user authentication, which may incorrectly authenticate requests. An authenticated attacker who could obtain information from a user request within the same realm could use that data to impersonate the victim and generate new session…
- risk 0.26cvss 5.0epss 0.00
A flaw was found in keycloak in versions before 9.0.0. A logged exception in the HttpMethod class may leak the password given as parameter. The highest threat from this vulnerability is to data confidentiality.
- risk 0.25cvss 4.9epss 0.00
A flaw was found in Keycloak. A remote attacker with high privileges, such as a realm administrator configuring a malicious Lightweight Directory Access Protocol (LDAP) server or an attacker compromising an upstream LDAP server, could exploit this vulnerability. By sending a…
- risk 0.25cvss 4.9epss 0.00
A flaw was found in Keycloak. A low-privilege administrator with the 'view-clients' role can exploit this by invoking the 'evaluate-scopes' Admin API endpoints with an arbitrary user ID (userId) parameter. This vulnerability allows for cross-role personally identifiable…
- risk 0.25cvss 4.9epss 0.00
A flaw was found in Keycloak. An administrator with `manage-users` permission can bypass the "Only administrators can view" setting for unmanaged attributes, allowing them to modify these attributes. This improper access control can lead to unauthorized changes to user profiles,…
- risk 0.25cvss 3.8epss 0.00
A flaw was found in Keycloak, where it did not properly check client tokens for possible revocation in its client credential flow. This flaw allows an attacker to access or modify potentially sensitive information.
- risk 0.25cvss 3.8epss 0.01
Keycloak up to version 6.0.0 allows the end user token (access or id token JWT) to be used as the session cookie for browser sessions for OIDC. As a result an attacker with access to service provider backend could hijack user’s browser session.
- risk 0.24cvss 3.7epss 0.00
A flaw was found in the backchannel logout endpoint of the keycloak-services component, which is part of the Red Hat Build of Keycloak. This component handles authentication and session management for applications. The issue occurs when an OIDC identity provider is configured to…
- risk 0.24cvss 4.8epss 0.01
A flaw was found in Keycloak before version 12.0.0, where it is possible to add unsafe schemes for the redirect_uri parameter. This flaw allows an attacker to perform a Cross-site scripting attack.
- risk 0.24cvss 4.7epss 0.00
It was found that Keycloak's Node.js adapter before version 4.8.3 did not properly verify the web token received from the server in its backchannel logout . An attacker with local access could use this to construct a malicious web token setting an NBF parameter that could…
- risk 0.23cvss 4.6epss 0.01
A flaw was found in Keycloak that prevents certain schemes in redirects, but permits them if a wildcard is appended to the token. This issue could allow an attacker to submit a specially crafted request leading to cross-site scripting (XSS) or further attacks. This flaw is the…
- risk 0.21cvss 4.3epss 0.00
A flaw was found in Keycloak. An authenticated user with existing organization membership can exploit this flaw by accessing user-facing APIs, such as the account API or by requesting an OpenID Connect (OIDC) token with the 'organization' scope. This allows organization metadata…
- risk 0.21cvss 4.3epss 0.00
A flaw was found in Keycloak. An authenticated user can bypass configured WebAuthn policies during credential registration by manipulating client-side JavaScript. This occurs because the server-side processAction() fails to validate that the newly created credential's…
- risk 0.21cvss 4.3epss 0.01
ClassLoaderTheme and ClasspathThemeResourceProviderFactory allows reading any file available as a resource to the classloader. By sending requests for theme resources with a relative path from an external HTTP client, the client will receive the content of random files if…
- risk 0.21cvss 3.3epss 0.00
A vulnerability was found in keycloak in the way that the OIDC logout endpoint does not have CSRF protection. Versions shipped with Red Hat Fuse 7, Red Hat Single Sign-on 7, and Red Hat Openshift Application Runtimes are believed to be vulnerable.
- risk 0.21cvss 4.3epss 0.00
JBoss KeyCloak is vulnerable to soft token deletion via CSRF
- risk 0.20cvss 4.2epss 0.00
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…
- risk 0.20cvss 4.2epss 0.01
A flaw was found in Keycloak before version 12.0.0 where it is possible to update the user's metadata attributes using Account REST API. This flaw allows an attacker to change its own NameID attribute to impersonate the admin user for any particular application.
- risk 0.20cvss 4.1epss 0.01
A flaw was found in Keycloak version 8.0.2 and 9.0.0, and was fixed in Keycloak version 9.0.1, where a malicious user registers as oneself. The attacker could then use the remove devices form to post different credential IDs and possibly remove MFA devices for other users.
- risk 0.18cvss 2.7epss 0.00
A vulnerability has been identified in Keycloak that could lead to unauthorized information disclosure. While it requires an already authenticated user, the /admin/serverinfo endpoint can inadvertently provide sensitive environment information.
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