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Information disclosure in Red Hat Build of Keycloak allows restricted administrators to view private user details (names, email addresses) via the role-users endpoint, due to a missing permission check. The flaw affects the keycloak-services library, exposing sensitive data to low-privilege users. No active exploitation or public exploit is known, and EPSS indicates low exploitation probability.
Information disclosure in the Keycloak Admin REST API allows a delegated administrator with view-only permissions to retrieve the resolved client secret from a secure vault instead of the vault placeholder, exposing sensitive credentials. Affected Red Hat builds include Keycloak, Single Sign-On 7, Data Grid 8, and JBoss EAP expansion pack. No active exploitation or public exploit is known; EPSS probability is low (0.21%).
Sensitive credential exposure in the keycloak-services authentication configuration endpoint allows view-only administrators to retrieve unmasked third-party service secrets, such as reCAPTCHA secret keys, through the administrative API. Affected deployments include Red Hat Build of Keycloak, Red Hat Single Sign-On 7, Red Hat Data Grid 8, and the JBoss EAP Expansion Pack. No public exploit code has been identified and this vulnerability is not listed in the CISA KEV catalog; however, the confidential nature of the exposed values - functional API credentials for third-party services - elevates the practical impact beyond what the CVSS score of 4.3 might initially suggest.
Brute-force lockout bypass in Keycloak's Client-Initiated Backchannel Authentication (CIBA) flow allows an attacker holding valid OAuth client credentials to redeem previously approved authentication requests and obtain access and refresh tokens for a user account that has since been locked. This is an incomplete fix for CVE-2026-9798: the brute-force protection check was applied to the CIBA initiation handler but was never added to the token redemption handler, creating a gap that persists after the earlier patch. No public exploit code has been identified at time of analysis, and this CVE is not listed in the CISA KEV catalog.
Unauthorized role removal in Keycloak's admin REST API allows a delegated administrator to strip privileged child roles from composite roles they are not authorized to manage, corrupting the role hierarchy and revoking access for users and administrators who depend on those composite roles. Affected products span Red Hat Build of Keycloak, Red Hat Single Sign-On 7, Red Hat Data Grid 8, and Red Hat JBoss EAP Expansion Pack. No public exploit code has been identified and this vulnerability is not listed in the CISA KEV catalog; however, in multi-tenant enterprise deployments where delegated administration is common, the integrity impact to IAM role structures is operationally significant.
Keycloak's default-groups REST endpoint and realm representation expose hidden group names and identifiers to delegated administrators who hold realm-viewing permissions but lack explicit group-viewing authorization. Affected products span Red Hat Build of Keycloak, Red Hat Single Sign-On 7, Red Hat Data Grid 8, and Red Hat JBoss EAP Expansion Pack. No public exploit code exists and CISA KEV listing is absent at time of analysis; the CVSS 4.3 Medium rating accurately reflects constrained impact limited to metadata disclosure.
Keycloak's Client Policies enforcement mechanism - designed to mandate stronger OAuth/OIDC client authentication such as signed JWTs (RFC 7523) - can be bypassed by any attacker who already holds valid client credentials. By supplying a crafted, unsigned assertion header in the token request, the attacker causes Keycloak to evaluate policy compliance as satisfied without performing cryptographic verification, allowing authentication to proceed via a weaker method such as a plain client secret. No public exploit code has been identified and this vulnerability is not listed in CISA KEV; however, the integrity impact is meaningful for organizations that deployed Client Policies specifically to harden their authentication security posture, as those controls are silently neutralized.
Authorization code injection in Red Hat Build of Keycloak's keycloak-services component enables a network-positioned attacker to hijack OAuth 2.0 flows by intercepting and cross-client redeeming authorization codes. Because codes are not cryptographically bound to the originating client, an attacker who obtains a victim's in-flight code can submit it using their own registered client credentials and receive access tokens tied to the victim's identity. No public exploit has been identified at time of analysis, and the CVSS AC:H rating reflects the non-trivial code interception prerequisite that constrains opportunistic exploitation.
Broken access control in Keycloak's organization management component allows a delegated administrator holding only organization management permissions to exploit the invitation API to provision new user accounts and inject unauthorized members into organizations. The attacker generates an invitation for a fabricated email address, then retrieves the secret registration link directly via the API - bypassing the email delivery step entirely - and uses it to self-register accounts without possessing user management permissions. No public exploit has been identified at time of analysis; exploitation is gated by the PR:H requirement (delegated administrator credentials), limiting realistic threat actors to insider or compromised-admin scenarios.
Keycloak's identity provider management component exposes OIDC client secrets to delegated administrators who manipulate the masked sentinel value mechanism during IdP updates. When a delegated admin submits a configuration update using the sentinel placeholder for the client secret while simultaneously changing the token URL to an attacker-controlled endpoint, Keycloak improperly reuses the real underlying secret without validating the consistency of the changed security-sensitive field. On the next authentication flow through that identity provider, Keycloak transmits the real client secret to the attacker's token URL, resulting in credential exfiltration. No public exploit code has been identified at time of analysis, and this CVE is not listed in the CISA KEV catalog.
Group search in Keycloak's administrative API leaks unauthorized parent group details to delegated administrators when Fine-Grained Admin Permissions v2 (FGAP v2) is enabled. A delegated admin with read access to a child group can trigger the flaw simply by searching for that child group, causing the API response to incorrectly return full attribute and configuration data for parent groups they have no authorization to view. CVSS 4.3 Medium (PR:L, C:L) reflects its limited confidentiality impact and authenticated-only exploitability; no active exploitation or public proof-of-concept has been identified at time of analysis.
Cross-site scripting in Jastow - the JSP implementation layer embedded within Red Hat JBoss Enterprise Application Platform alongside Undertow - allows unauthenticated remote attackers to inject and execute malicious scripts when a specific combination of configurations permits unescaped characters to pass through URL processing. Affected deployments span JBoss EAP 7, EAP 8, the Expansion Pack, and linked products such as Red Hat Single Sign-On 7 that share this component. No public exploit code has been identified at time of analysis, and this vulnerability is not listed in the CISA Known Exploited Vulnerabilities catalog.
Keycloak's OIDC broker incorrectly applies the email_verified claim from the id_token to whichever email address is returned by the userinfo endpoint, even when those two sources disagree. An attacker who controls or compromises an upstream OIDC identity provider can exploit this desynchronization - configured with trustEmail=true - to mark an arbitrary, attacker-chosen email address as verified in Keycloak's database. The practical consequence is bypassing email verification workflows or triggering account linkage/takeover in applications that trust the email_verified flag from Keycloak for identity decisions. No public exploit code exists and no CISA KEV listing applies at time of analysis.
Keycloak's ClientResource admin API component, when Fine-Grained Admin Permissions v2 (FGAP v2) is enabled, permits a delegated administrator to attach or detach hidden client scopes that fall outside their authorized management boundary. By injecting unauthorized scopes into client configurations, an attacker can manipulate the contents of OAuth2/OIDC security tokens issued to end-users, causing downstream applications to grant privilege levels beyond what the original access policy intended. No public exploit is identified at time of analysis and the vulnerability is not listed in the CISA KEV catalog; however, the token-injection impact class carries meaningful risk in federated identity deployments.
Keycloak's Fine-Grained Admin Permissions v2 (FGAP v2) fails to enforce group-level authorization when a restricted administrator queries role-to-group assignments, exposing group names and custom attributes beyond the admin's intended scope. Restricted admins holding only role-view permission can enumerate all groups assigned to that role, bypassing the group-level access controls that FGAP v2 is designed to enforce. No public exploit code exists and this vulnerability has not been added to the CISA KEV catalog; however, the EPSS risk is compounded in deployments where group attributes carry sensitive operational metadata.
Keycloak allows authenticated administrators with manage-clients permission to escalate privileges to manage-permissions level, enabling unauthorized control over roles, users, and administrative functions within a realm. Red Hat Build of Keycloak, JBoss Enterprise Application Platform 8, and Red Hat Single Sign-On 7 are affected when admin permissions are enabled at the realm level. The vulnerability requires high-privilege authentication but carries medium CVSS severity (6.5) due to confidentiality and integrity impact without availability compromise.
A SSRF vulnerability in A flaw (CVSS 3.1) that allows the attacker. Remediation should follow standard vulnerability management procedures.
A resource exhaustion vulnerability exists in Undertow where remote attackers can send HTTP GET requests with multipart/form-data content to trigger premature parsing and disk storage of request data, leading to Denial of Service when applications use parameter retrieval methods like getParameterMap(). The vulnerability affects multiple Red Hat products including Enterprise Linux 8, 9, and 10, JBoss Enterprise Application Platform 7 and 8, Red Hat Fuse 7, and several Apache Camel variants. An attacker with network access and no authentication can exhaust server disk resources with moderate attack complexity, causing service unavailability.
Keycloak's User-Managed Access endpoint fails to properly enforce access control on PUT operations, permitting authenticated attackers to modify protected resources despite the allowRemoteResourceManagement restriction being disabled. This access control bypass affects data integrity and impacts any organization using Keycloak for identity and access management. The vulnerability requires valid credentials to exploit and currently has no available patch.
A remote code execution vulnerability in A flaw (CVSS 5.8) that allows an attacker. Remediation should follow standard vulnerability management procedures.
Information disclosure in Red Hat Build of Keycloak allows restricted administrators to view private user details (names, email addresses) via the role-users endpoint, due to a missing permission check. The flaw affects the keycloak-services library, exposing sensitive data to low-privilege users. No active exploitation or public exploit is known, and EPSS indicates low exploitation probability.
Information disclosure in the Keycloak Admin REST API allows a delegated administrator with view-only permissions to retrieve the resolved client secret from a secure vault instead of the vault placeholder, exposing sensitive credentials. Affected Red Hat builds include Keycloak, Single Sign-On 7, Data Grid 8, and JBoss EAP expansion pack. No active exploitation or public exploit is known; EPSS probability is low (0.21%).
Sensitive credential exposure in the keycloak-services authentication configuration endpoint allows view-only administrators to retrieve unmasked third-party service secrets, such as reCAPTCHA secret keys, through the administrative API. Affected deployments include Red Hat Build of Keycloak, Red Hat Single Sign-On 7, Red Hat Data Grid 8, and the JBoss EAP Expansion Pack. No public exploit code has been identified and this vulnerability is not listed in the CISA KEV catalog; however, the confidential nature of the exposed values - functional API credentials for third-party services - elevates the practical impact beyond what the CVSS score of 4.3 might initially suggest.
Brute-force lockout bypass in Keycloak's Client-Initiated Backchannel Authentication (CIBA) flow allows an attacker holding valid OAuth client credentials to redeem previously approved authentication requests and obtain access and refresh tokens for a user account that has since been locked. This is an incomplete fix for CVE-2026-9798: the brute-force protection check was applied to the CIBA initiation handler but was never added to the token redemption handler, creating a gap that persists after the earlier patch. No public exploit code has been identified at time of analysis, and this CVE is not listed in the CISA KEV catalog.
Unauthorized role removal in Keycloak's admin REST API allows a delegated administrator to strip privileged child roles from composite roles they are not authorized to manage, corrupting the role hierarchy and revoking access for users and administrators who depend on those composite roles. Affected products span Red Hat Build of Keycloak, Red Hat Single Sign-On 7, Red Hat Data Grid 8, and Red Hat JBoss EAP Expansion Pack. No public exploit code has been identified and this vulnerability is not listed in the CISA KEV catalog; however, in multi-tenant enterprise deployments where delegated administration is common, the integrity impact to IAM role structures is operationally significant.
Keycloak's default-groups REST endpoint and realm representation expose hidden group names and identifiers to delegated administrators who hold realm-viewing permissions but lack explicit group-viewing authorization. Affected products span Red Hat Build of Keycloak, Red Hat Single Sign-On 7, Red Hat Data Grid 8, and Red Hat JBoss EAP Expansion Pack. No public exploit code exists and CISA KEV listing is absent at time of analysis; the CVSS 4.3 Medium rating accurately reflects constrained impact limited to metadata disclosure.
Keycloak's Client Policies enforcement mechanism - designed to mandate stronger OAuth/OIDC client authentication such as signed JWTs (RFC 7523) - can be bypassed by any attacker who already holds valid client credentials. By supplying a crafted, unsigned assertion header in the token request, the attacker causes Keycloak to evaluate policy compliance as satisfied without performing cryptographic verification, allowing authentication to proceed via a weaker method such as a plain client secret. No public exploit code has been identified and this vulnerability is not listed in CISA KEV; however, the integrity impact is meaningful for organizations that deployed Client Policies specifically to harden their authentication security posture, as those controls are silently neutralized.
Authorization code injection in Red Hat Build of Keycloak's keycloak-services component enables a network-positioned attacker to hijack OAuth 2.0 flows by intercepting and cross-client redeeming authorization codes. Because codes are not cryptographically bound to the originating client, an attacker who obtains a victim's in-flight code can submit it using their own registered client credentials and receive access tokens tied to the victim's identity. No public exploit has been identified at time of analysis, and the CVSS AC:H rating reflects the non-trivial code interception prerequisite that constrains opportunistic exploitation.
Broken access control in Keycloak's organization management component allows a delegated administrator holding only organization management permissions to exploit the invitation API to provision new user accounts and inject unauthorized members into organizations. The attacker generates an invitation for a fabricated email address, then retrieves the secret registration link directly via the API - bypassing the email delivery step entirely - and uses it to self-register accounts without possessing user management permissions. No public exploit has been identified at time of analysis; exploitation is gated by the PR:H requirement (delegated administrator credentials), limiting realistic threat actors to insider or compromised-admin scenarios.
Keycloak's identity provider management component exposes OIDC client secrets to delegated administrators who manipulate the masked sentinel value mechanism during IdP updates. When a delegated admin submits a configuration update using the sentinel placeholder for the client secret while simultaneously changing the token URL to an attacker-controlled endpoint, Keycloak improperly reuses the real underlying secret without validating the consistency of the changed security-sensitive field. On the next authentication flow through that identity provider, Keycloak transmits the real client secret to the attacker's token URL, resulting in credential exfiltration. No public exploit code has been identified at time of analysis, and this CVE is not listed in the CISA KEV catalog.
Group search in Keycloak's administrative API leaks unauthorized parent group details to delegated administrators when Fine-Grained Admin Permissions v2 (FGAP v2) is enabled. A delegated admin with read access to a child group can trigger the flaw simply by searching for that child group, causing the API response to incorrectly return full attribute and configuration data for parent groups they have no authorization to view. CVSS 4.3 Medium (PR:L, C:L) reflects its limited confidentiality impact and authenticated-only exploitability; no active exploitation or public proof-of-concept has been identified at time of analysis.
Cross-site scripting in Jastow - the JSP implementation layer embedded within Red Hat JBoss Enterprise Application Platform alongside Undertow - allows unauthenticated remote attackers to inject and execute malicious scripts when a specific combination of configurations permits unescaped characters to pass through URL processing. Affected deployments span JBoss EAP 7, EAP 8, the Expansion Pack, and linked products such as Red Hat Single Sign-On 7 that share this component. No public exploit code has been identified at time of analysis, and this vulnerability is not listed in the CISA Known Exploited Vulnerabilities catalog.
Keycloak's OIDC broker incorrectly applies the email_verified claim from the id_token to whichever email address is returned by the userinfo endpoint, even when those two sources disagree. An attacker who controls or compromises an upstream OIDC identity provider can exploit this desynchronization - configured with trustEmail=true - to mark an arbitrary, attacker-chosen email address as verified in Keycloak's database. The practical consequence is bypassing email verification workflows or triggering account linkage/takeover in applications that trust the email_verified flag from Keycloak for identity decisions. No public exploit code exists and no CISA KEV listing applies at time of analysis.
Keycloak's ClientResource admin API component, when Fine-Grained Admin Permissions v2 (FGAP v2) is enabled, permits a delegated administrator to attach or detach hidden client scopes that fall outside their authorized management boundary. By injecting unauthorized scopes into client configurations, an attacker can manipulate the contents of OAuth2/OIDC security tokens issued to end-users, causing downstream applications to grant privilege levels beyond what the original access policy intended. No public exploit is identified at time of analysis and the vulnerability is not listed in the CISA KEV catalog; however, the token-injection impact class carries meaningful risk in federated identity deployments.
Keycloak's Fine-Grained Admin Permissions v2 (FGAP v2) fails to enforce group-level authorization when a restricted administrator queries role-to-group assignments, exposing group names and custom attributes beyond the admin's intended scope. Restricted admins holding only role-view permission can enumerate all groups assigned to that role, bypassing the group-level access controls that FGAP v2 is designed to enforce. No public exploit code exists and this vulnerability has not been added to the CISA KEV catalog; however, the EPSS risk is compounded in deployments where group attributes carry sensitive operational metadata.
Keycloak allows authenticated administrators with manage-clients permission to escalate privileges to manage-permissions level, enabling unauthorized control over roles, users, and administrative functions within a realm. Red Hat Build of Keycloak, JBoss Enterprise Application Platform 8, and Red Hat Single Sign-On 7 are affected when admin permissions are enabled at the realm level. The vulnerability requires high-privilege authentication but carries medium CVSS severity (6.5) due to confidentiality and integrity impact without availability compromise.
A SSRF vulnerability in A flaw (CVSS 3.1) that allows the attacker. Remediation should follow standard vulnerability management procedures.
A resource exhaustion vulnerability exists in Undertow where remote attackers can send HTTP GET requests with multipart/form-data content to trigger premature parsing and disk storage of request data, leading to Denial of Service when applications use parameter retrieval methods like getParameterMap(). The vulnerability affects multiple Red Hat products including Enterprise Linux 8, 9, and 10, JBoss Enterprise Application Platform 7 and 8, Red Hat Fuse 7, and several Apache Camel variants. An attacker with network access and no authentication can exhaust server disk resources with moderate attack complexity, causing service unavailability.
Keycloak's User-Managed Access endpoint fails to properly enforce access control on PUT operations, permitting authenticated attackers to modify protected resources despite the allowRemoteResourceManagement restriction being disabled. This access control bypass affects data integrity and impacts any organization using Keycloak for identity and access management. The vulnerability requires valid credentials to exploit and currently has no available patch.
A remote code execution vulnerability in A flaw (CVSS 5.8) that allows an attacker. Remediation should follow standard vulnerability management procedures.