keycloak-services: keycloak-services: unauthenticated DoS via unbounded locale caching

A flaw was found in the theme localization endpoints of the keycloak-services component, which is the core service responsible for authentication flows and theme management in Keycloak. The issue occurs because the system accepts arbitrary locale tags from unauthenticated requests and stores them...

keycloak-services: keycloak-services: JWT Bearer authorization grant does not enforce consentRequired

A flaw was found in the JWT Bearer authorization grant implementation within the keycloak-services component of Red Hat Build of Keycloak. This component handles various OAuth2 and OpenID Connect grant types used for issuing access tokens. The issue occurs because the JWT Bearer grant fails to...

Important: Red Hat Security Advisory: Red Hat build of Keycloak 26.6.7 Security Update

New Red Hat build of Keycloak 26.6.7 packages are available from the Customer Portal Red Hat build of Keycloak 26.6.7 is a standalone server, based on the Keycloak project, that provides authentication and standards-based single sign-on capabilities for web and mobile applications. Security fixes...

CVE-2026-79651

A flaw was found in the theme localization endpoints of the keycloak-services component, which is the core service responsible for authentication flows and theme management in Keycloak. The issue occurs because the system accepts arbitrary locale tags from unauthenticated requests and stores them...

CVE-2026-74909

Keycloak provides a policy enforcer to protect applications by matching incoming web requests against defined security policies. A flaw was found where the enforcer fails to correctly normalize web addresses that contain special encoded characters, such as those representing semicolons or directo...

CVE-2026-18212

A flaw was found in the SAML Redirect Binding implementation of Keycloak, an open-source identity and access management solution. The issue occurs because the custom DEFLATE compression and decompression helpers fail to release native zlib memory after use. An unauthenticated attacker can exploit...

CVE-2026-90997

A flaw was found in Keycloak. When deployed in stateless mode with MySQL or MariaDB, a mismatch in row-count semantics between the database driver and Keycloak's application logic allows an attacker to bypass replay protection. This vulnerability enables an attacker who intercepts single-use...

CVE-2026-79651 Keycloak-services: keycloak-services: unauthenticated dos via unbounded locale caching

A flaw was found in the theme localization endpoints of the keycloak-services component, which is the core service responsible for authentication flows and theme management in Keycloak. The issue occurs because the system accepts arbitrary locale tags from unauthenticated requests and stores them...

ch.iterial.keycloak.plugins:keycloak-directus-plugin (>=0.1.0, <=0.7.0), ch.nerdin.keycloak.extensions:avatar-extension (0.0.1) +162 more potentially affected by CVE-2026-79651 via org.keycloak:keycloak-services (>=23.0.0, <=26.7.3)

org.keycloak:keycloak-services MAVEN version =23.0.0, =0.1.0, =24.3.0.0, =24.3.0.0, =1.0.0, =1.0.0, =1.2.0, =1.0.1, =1.0.1, =1.0.1, =1.2.0 and more Source cves: CVE-2026-79651 Source advisory: MEND:CVE-2026-79651https://vulners.com/mend/MEN...

CVE-2026-79651 Keycloak-services: keycloak-services: unauthenticated dos via unbounded locale caching

A flaw was found in the theme localization endpoints of the keycloak-services component, which is the core service responsible for authentication flows and theme management in Keycloak. The issue occurs because the system accepts arbitrary locale tags from unauthenticated requests and stores them...

EUVD-2026-80830

A flaw was found in the theme localization endpoints of the keycloak-services component, which is the core service responsible for authentication flows and theme management in Keycloak. The issue occurs because the system accepts arbitrary locale tags from unauthenticated requests and stores them...

CVE-2026-79651

CVE-2026-79651 is an unauthenticated denial-of-service vulnerability in the keycloak-services component of Keycloak, specifically in its theme localization endpoints . The root cause is that the system accepts arbitrary locale tags from unauthenticated requests and stores them in a permanent in-m...

CVE-2026-74909 Keycloak-services: keycloak-services: incomplete fix for cve-2026-15573 allows policy enforcer bypass via percent-encoded uri segments

Keycloak provides a policy enforcer to protect applications by matching incoming web requests against defined security policies. A flaw was found where the enforcer fails to correctly normalize web addresses that contain special encoded characters, such as those representing semicolons or directo...

EUVD-2026-80829

Keycloak provides a policy enforcer to protect applications by matching incoming web requests against defined security policies. A flaw was found where the enforcer fails to correctly normalize web addresses that contain special encoded characters, such as those representing semicolons or directo...

CVE-2026-74909

CVE-2026-74909 is an incomplete fix for CVE-2026-15573 in Keycloak's policy enforcer (component: keycloak-services). The enforcer fails to correctly normalize URLs containing percent-encoded characters such as semicolons or directory-traversal segments, allowing an authenticated user to trick the...

CVE-2026-74909 Keycloak-services: keycloak-services: incomplete fix for cve-2026-15573 allows policy enforcer bypass via percent-encoded uri segments

Keycloak provides a policy enforcer to protect applications by matching incoming web requests against defined security policies. A flaw was found where the enforcer fails to correctly normalize web addresses that contain special encoded characters, such as those representing semicolons or directo...

be.jidoka:jdk-keycloak-admin (>=1.0.0, <=2.4.0), br.com.anteros:anteros-keycloak (1.0.0) +1147 more potentially affected by CVE-2026-74909 via org.keycloak:keycloak-common (>=4.0.0.beta2, <=26.7.3)

org.keycloak:keycloak-common MAVEN version =4.0.0.beta2, =1.0.0, =0.0.8-alpha, =0.0.1-alpha, =1.0.0, =0.1.0, =0.2.0, =0.2.0, =0.2.0, =0.5.0, =0.2.0, =0.2.0, =0.5.0, =0.10.0, =0.10.5-experimental and more Source cves: CVE-2026-74909 Source advisory: MEND:CVE-2026-74909...

com.eurodyn.qlack2.util:qlack2-util-sso (>=2.3.5, <=2.3.19), com.github.wnameless.spring.boot.up:spring-boot-up-embedded-keycloak (>=24.3.0.0, <=26.7.3.0) +92 more potentially affected by CVE-2026-18212 via org.keycloak:keycloak-saml-core (>=1.2.0.cr1, <=26.7.3)

org.keycloak:keycloak-saml-core MAVEN version =1.2.0.cr1, =2.3.5, =24.3.0.0, =24.3.0.0, =2.5.6-24.0, =1.0.0-25.0, =0.1.0, =2.1, =8.1, =2.1, =4.1.0, =4.0.3, =1.0.0, =26.3.0, =26.1.0, =26.4.0, =26.7.3 and more Source cves: CVE-2026-18212 Source advisory:...

CVE-2026-18212 Keycloak-services: keycloak-services: saml redirect deflate helpers leak native zlib state

A flaw was found in the SAML Redirect Binding implementation of Keycloak, an open-source identity and access management solution. The issue occurs because the custom DEFLATE compression and decompression helpers fail to release native zlib memory after use. An unauthenticated attacker can exploit...

CVE-2026-18212

Keycloak 's SAML Redirect Binding implementation is affected by a native memory leak. The custom DEFLATE compression and decompression helpers fail to release native zlib memory after processing, so an unauthenticated attacker can send repeated malformed SAML requests to exhaust native memory and...