CVE-2023-6920

An incomplete fix was found in the Keycloak Core patch. An attacker can steal authorization codes or tokens from clients using a wildcard in the JARM response mode "formpost.jwt". Changing the responsemode parameter in the original proof of concept from "formpost" to "formpost.jwt" can bypass the...

Red Hat Keycloak Input Validation Error Vulnerability

Red Hat Keycloak is a suite of software from Red Hat, Inc. that provides authentication and management capabilities for modern applications and services. Red Hat Keycloak suffers from an input validation error vulnerability that stems from a vulnerability that could allow an attacker to steal...

PT-2023-32823 · Red Hat · Keycloak

Name of the Vulnerable Software and Affected Versions: Keycloak affected versions not specified Description: A flaw was found in Keycloak, which may allow an attacker to steal authorization codes or tokens from clients using a wildcard in the JARM response mode "form post.jwt". This could be used...

Denial Of Service (DoS)

org.keycloak: keycloak-model-jpa is vulnerable to Denial of Service DoS. The vulnerability is due to a lack of input validation when handling a large number of offline client sessions in loadUserSessionsWithClientSessions method. This could lead to excessive memory and CPU consumption which could...

Duplicate Advisory: Keycloak vulnerable to reflected XSS via wildcard in OIDC redirect_uri

Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-cvg2-7c3j-g36j. This link is maintained to preserve external references. Original Description A flaw was found in Keycloak that prevents certain schemes in redirects, but permits them if a wildcard is appended t...

GHSA-5968-QW33-H47J Duplicate Advisory: Keycloak vulnerable to reflected XSS via wildcard in OIDC redirect_uri

Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-cvg2-7c3j-g36j. This link is maintained to preserve external references. Original Description A flaw was found in Keycloak that prevents certain schemes in redirects, but permits them if a wildcard is appended t...

RHEL 8 : Red Hat Single Sign-On 7.6.6 security update on RHEL 8 (Important) (RHSA-2023:7856)

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2023:7856 advisory. Red Hat Single Sign-On 7.6 is a standalone server, based on the Keycloak project, that provides authentication and standards-based single...

CVE-2023-6134

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 result of an incomple...

Cross site scripting

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 result of an incomple...

CVE-2023-6134 Keycloak: reflected xss via wildcard in oidc redirect_uri

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 result of an incomple...

CVE-2023-6134

CVE-2023-6134 is a vulnerability in Keycloak-based Red Hat Single Sign-On (SSO) implementations, disclosed by OSV entries tied to RHSA advisories. The issue is a reflected XSS via a wildcard in the OIDC redirect_uri, arising from an incomplete fix for CVE-2020-10748. The connected docs confirm th...

CVE-2023-6134 Keycloak: reflected xss via wildcard in oidc redirect_uri

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 result of an incomple...

Important: Red Hat Security Advisory: Red Hat build of Keycloak 22.0.7 images enhancement and security update

A security update is now available for Red Hat build of Keycloak 22.0.7 images running on OpenShift Container Platform. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity...

keycloak: reflected XSS via wildcard in OIDC redirect_uri

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 result of an incomple...

keycloak: redirect_uri validation bypass

A flaw was found in the redirecturi validation logic in Keycloak. This issue may allow a bypass of otherwise explicitly allowed hosts. A successful attack may lead to an access token being stolen, making it possible for the attacker to impersonate other users...

Important: Red Hat Security Advisory: Red Hat build of Keycloak 22.0.7 enhancement and security update

Red Hat build of Keycloak 22.0.7 is now available from the Customer Portal. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability...

keycloak: reflected XSS via wildcard in OIDC redirect_uri

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 result of an incomple...

Important: Red Hat Security Advisory: Red Hat Single Sign-On 7.6.6 security update

A security update is now available for Red Hat Single Sign-On 7.6 from the Customer Portal. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each...

keycloak: redirect_uri validation bypass

A flaw was found in the redirecturi validation logic in Keycloak. This issue may allow a bypass of otherwise explicitly allowed hosts. A successful attack may lead to an access token being stolen, making it possible for the attacker to impersonate other users...

keycloak: offline session token DoS

An unconstrained memory consumption vulnerability was discovered in Keycloak. It can be triggered in environments which have millions of offline tokens 500,000 users with each having at least 2 saved sessions. If an attacker creates two or more user sessions and then open the "consents" tab of th...