Search criteria
96 vulnerabilities found for Red Hat Build of Keycloak by Red Hat
CVE-2026-1518 (GCVE-0-2026-1518)
Vulnerability from nvd – Published: 2026-02-02 07:17 – Updated: 2026-02-02 14:07
VLAI?
Title
Keycloak: blind server-side request forgery (ssrf) via ciba backchannel notification endpoint in keycloak
Summary
A flaw was found in Keycloak’s CIBA feature where insufficient validation of client-configured backchannel notification endpoints could allow blind server-side requests to internal services.
Severity ?
CWE
- CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
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Impacted products
| Vendor | Product | Version | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Red Hat | Red Hat Build of Keycloak |
cpe:/a:redhat:build_keycloak: |
||||||||||||
|
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Credits
Red Hat would like to thank Patrick Smith for reporting this issue.
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CVE-2025-13881 (GCVE-0-2025-13881)
Vulnerability from nvd – Published: 2026-02-02 05:43 – Updated: 2026-02-02 16:28
VLAI?
Title
Org.keycloak.services.resources.admin: keycloak: limited administrator can retrieve sensitive user attributes via admin api
Summary
A flaw was found in Keycloak Admin API. This vulnerability allows an administrator with limited privileges to retrieve sensitive custom attributes via the /unmanagedAttributes endpoint, bypassing User Profile visibility settings.
Severity ?
CWE
- CWE-266 - Incorrect Privilege Assignment
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Red Hat | Red Hat Build of Keycloak |
cpe:/a:redhat:build_keycloak: |
Credits
Red Hat would like to thank Simone Paganessi for reporting this issue.
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CVE-2024-4027 (GCVE-0-2024-4027)
Vulnerability from nvd – Published: 2026-01-30 14:25 – Updated: 2026-01-30 14:41
VLAI?
Title
Undertow: outofmemoryerror in httpservletrequestimpl.getparameternames() can cause remote dos attacks
Summary
A flaw was found in Undertow. Servlets using a method that calls HttpServletRequestImpl.getParameterNames() can cause an OutOfMemoryError when the client sends a request with large parameter names. This issue can be exploited by an unauthorized user to cause a remote denial-of-service (DoS) attack.
Severity ?
7.5 (High)
CWE
- CWE-20 - Improper Input Validation
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
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CVE-2026-1190 (GCVE-0-2026-1190)
Vulnerability from nvd – Published: 2026-01-26 19:36 – Updated: 2026-01-26 20:57
VLAI?
Title
Org.keycloak/keycloak-services: keycloak saml brokering: response delay due to unchecked notonorafter in subjectconfirmationdata
Summary
A flaw was found in Keycloak's SAML brokering functionality. When Keycloak is configured as a client in a Security Assertion Markup Language (SAML) setup, it fails to validate the `NotOnOrAfter` timestamp within the `SubjectConfirmationData`. This allows an attacker to delay the expiration of SAML responses, potentially extending the time a response is considered valid and leading to unexpected session durations or resource consumption.
Severity ?
CWE
- CWE-112 - Missing XML Validation
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | |||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Red Hat | Red Hat Build of Keycloak |
cpe:/a:redhat:build_keycloak: |
|||||||||||||||||
|
|||||||||||||||||||
Credits
Red Hat would like to thank Franz Bettag (Bettag Systems) for reporting this issue.
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CVE-2025-14083 (GCVE-0-2025-14083)
Vulnerability from nvd – Published: 2026-01-21 12:04 – Updated: 2026-01-21 14:24
VLAI?
Title
Keycloak-server: keycloak: improper access control in admin rest api leads to information disclosure
Summary
A flaw was found in the Keycloak Admin REST API. This vulnerability allows the exposure of backend schema and rules, potentially leading to targeted attacks or privilege escalation via improper access control.
Severity ?
CWE
- CWE-284 - Improper Access Control
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Red Hat | Red Hat Build of Keycloak |
cpe:/a:redhat:build_keycloak: |
Credits
Red Hat would like to thank Muhammad Usman (HackerSSG) (securetackles) for reporting this issue.
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CVE-2025-14559 (GCVE-0-2025-14559)
Vulnerability from nvd – Published: 2026-01-21 06:13 – Updated: 2026-01-21 14:29
VLAI?
Title
Org.keycloak/keycloak-services: keycloak keycloak-services: business logic flaw allows unauthorized token issuance for disabled users
Summary
A flaw was found in the keycloak-services component of Keycloak. This vulnerability allows the issuance of access and refresh tokens for disabled users, leading to unauthorized use of previously revoked privileges, via a business logic vulnerability in the Token Exchange implementation when a privileged client invokes the token exchange flow.
Severity ?
6.5 (Medium)
CWE
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Red Hat | Red Hat Build of Keycloak |
cpe:/a:redhat:build_keycloak: |
Credits
Red Hat would like to thank Aytac Kalinci for reporting this issue.
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CVE-2026-1035 (GCVE-0-2026-1035)
Vulnerability from nvd – Published: 2026-01-21 05:52 – Updated: 2026-01-21 14:40
VLAI?
Title
Org.keycloak.protocol.oidc: keycloak refresh token reuse bypass via toctou race condition
Summary
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Severity ?
CWE
- CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | |||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Red Hat | Red Hat Build of Keycloak |
cpe:/a:redhat:build_keycloak: |
|||||||||||||||||
|
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Credits
Red Hat would like to thank Mohamed Amine ait Ouchebou (mrecho) (Indiesecurity) for reporting this issue.
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CVE-2026-1180 (GCVE-0-2026-1180)
Vulnerability from nvd – Published: 2026-01-20 12:33 – Updated: 2026-01-21 05:52
VLAI?
Title
Org.keycloak.protocol.oidc: blind server-side request forgery (ssrf) in keycloak oidc dynamic client registration via jwks_uri
Summary
A flaw was identified in Keycloak’s OpenID Connect Dynamic Client Registration feature when clients authenticate using private_key_jwt. The issue allows a client to specify an arbitrary jwks_uri, which Keycloak then retrieves without validating the destination. This enables attackers to coerce the Keycloak server into making HTTP requests to internal or restricted network resources. As a result, attackers can probe internal services and cloud metadata endpoints, creating an information disclosure and reconnaissance risk.
Severity ?
5.8 (Medium)
CWE
- CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | |||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Red Hat | Red Hat Build of Keycloak |
cpe:/a:redhat:build_keycloak: |
|||||||||||||||||||||||||||
|
|||||||||||||||||||||||||||||
Credits
Red Hat would like to thank Lucas Montes (Nirox) for reporting this issue.
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CVE-2026-0976 (GCVE-0-2026-0976)
Vulnerability from nvd – Published: 2026-01-15 12:06 – Updated: 2026-01-15 14:45
VLAI?
Title
Org.keycloak/keycloak-quarkus-server: keycloak: proxy bypass due to improper handling of matrix parameters in url paths
Summary
A flaw was found in Keycloak. This improper input validation vulnerability occurs because Keycloak accepts RFC-compliant matrix parameters in URL path segments, while common reverse proxy configurations may ignore or mishandle them. A remote attacker can craft requests to mask path segments, potentially bypassing proxy-level path filtering. This could expose administrative or sensitive endpoints that operators believe are not externally reachable.
Severity ?
CWE
- CWE-20 - Improper Input Validation
Assigner
References
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|---|---|---|---|---|---|---|---|---|
|
||||||||
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cpe:/a:redhat:build_keycloak: |
||||||||||||||||||||||||||||||||
|
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Credits
Red Hat would like to thank Alexander Schwartz (RedHat) for reporting this issue.
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CVE-2026-0707 (GCVE-0-2026-0707)
Vulnerability from nvd – Published: 2026-01-08 03:41 – Updated: 2026-01-08 15:55
VLAI?
Title
Keycloak: keycloak authorization header parsing leading to potential security control bypass
Summary
A flaw was found in Keycloak. The Keycloak Authorization header parser is overly permissive regarding the formatting of the "Bearer" authentication scheme. It accepts non-standard characters (such as tabs) as separators and tolerates case variations that deviate from RFC 6750 specifications.
Severity ?
5.3 (Medium)
CWE
- CWE-551 - Incorrect Behavior Order: Authorization Before Parsing and Canonicalization
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
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|---|---|---|---|---|
| Red Hat | Red Hat Build of Keycloak |
cpe:/a:redhat:build_keycloak: |
Credits
Red Hat would like to thank Guanping Zhang for reporting this issue.
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CVE-2025-14777 (GCVE-0-2025-14777)
Vulnerability from nvd – Published: 2025-12-16 05:02 – Updated: 2025-12-16 19:09
VLAI?
Title
Keycloak: keycloak idor in realm client creating/deleting
Summary
A flaw was found in Keycloak. An IDOR (Broken Access Control) vulnerability exists in the admin API endpoints for authorization resource management, specifically in ResourceSetService and PermissionTicketService. The system checks authorization against the resourceServer (client) ID provided in the API request, but the backend database lookup and modification operations (findById, delete) only use the resourceId. This mismatch allows an authenticated attacker with fine-grained admin permissions for one client (e.g., Client A) to delete or update resources belonging to another client (Client B) within the same realm by supplying a valid resource ID.
Severity ?
6 (Medium)
CWE
- CWE-289 - Authentication Bypass by Alternate Name
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Red Hat | Red Hat Build of Keycloak |
cpe:/a:redhat:build_keycloak: |
Credits
Red Hat would like to thank Joshua Rogers for reporting this issue.
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CVE-2025-14082 (GCVE-0-2025-14082)
Vulnerability from nvd – Published: 2025-12-10 09:04 – Updated: 2026-01-16 05:00
VLAI?
Title
Keycloak-services: keycloak admin rest api: improper access control leads to sensitive role metadata information disclosure
Summary
A flaw was found in Keycloak Admin REST (Representational State Transfer) API. This vulnerability allows information disclosure of sensitive role metadata via insufficient authorization checks on the /admin/realms/{realm}/roles endpoint.
Severity ?
CWE
- CWE-284 - Improper Access Control
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Red Hat | Red Hat Build of Keycloak |
cpe:/a:redhat:build_keycloak: |
Credits
Red Hat would like to thank Muhammad Usman (HackerSSG) (securetackles) for reporting this issue.
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CVE-2024-3884 (GCVE-0-2024-3884)
Vulnerability from nvd – Published: 2025-12-03 18:40 – Updated: 2026-01-26 22:47
VLAI?
Title
Undertow: outofmemory when parsing form data encoding with application/x-www-form-urlencoded
Summary
A flaw was found in Undertow that can cause remote denial of service attacks. When the server uses the FormEncodedDataDefinition.doParse(StreamSourceChannel) method to parse large form data encoding with application/x-www-form-urlencoded, the method will cause an OutOfMemory issue. This flaw allows unauthorized users to cause a remote denial of service (DoS) attack.
Severity ?
7.5 (High)
CWE
- CWE-20 - Improper Input Validation
Assigner
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| URL | Tags | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||
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| Red Hat | Red Hat JBoss Enterprise Application Platform 8.1 |
cpe:/a:redhat:jboss_enterprise_application_platform:8.0::el8 |
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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CVE-2025-5416 (GCVE-0-2025-5416)
Vulnerability from nvd – Published: 2025-06-20 16:04 – Updated: 2025-11-21 07:36
VLAI?
Title
Keycloak-core: keycloak environment information
Summary
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.
Severity ?
CWE
- CWE-497 - Exposure of Sensitive System Information to an Unauthorized Control Sphere
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Red Hat | Red Hat Build of Keycloak |
cpe:/a:redhat:build_keycloak: |
Credits
Red Hat would like to thank Ibrahim Khorwat (Almadar Aljadid) and Murad Baggas (Almadar Aljadid) for reporting this issue.
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CVE-2025-3910 (GCVE-0-2025-3910)
Vulnerability from nvd – Published: 2025-04-29 20:46 – Updated: 2026-01-29 19:37
VLAI?
Title
Org.keycloak.authentication: two factor authentication bypass
Summary
A flaw was found in Keycloak. The org.keycloak.authorization package may be vulnerable to circumventing required actions, allowing users to circumvent requirements such as setting up two-factor authentication.
Severity ?
5.4 (Medium)
CWE
- CWE-287 - Improper Authentication
Assigner
References
| URL | Tags | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
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Impacted products
| Vendor | Product | Version | ||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Affected:
25.0.0 , < 25.*
(semver)
Affected: 26.0.0 , < 26.0.11 (semver) Unknown: 26.1.0 , < 26.1.* (semver) Affected: 26.2.0 , < 26.2.2 (semver) |
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Credits
This issue was discovered by Marek Posolda (Red Hat).
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CVE-2025-3501 (GCVE-0-2025-3501)
Vulnerability from nvd – Published: 2025-04-29 20:45 – Updated: 2025-11-20 07:27
VLAI?
Title
Org.keycloak.protocol.services: keycloak hostname verification
Summary
A flaw was found in Keycloak. By setting a verification policy to 'ALL', the trust store certificate verification is skipped, which is unintended.
Severity ?
8.2 (High)
CWE
- CWE-297 - Improper Validation of Certificate with Host Mismatch
Assigner
References
| URL | Tags | |||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||||||||
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Affected:
25.0.0 , < 25.*
(semver)
Affected: 26.0.0 , < 26.0.11 (semver) Unknown: 26.1.0 , < 26.1.* (semver) Affected: 26.2.0 , < 26.2.2 (semver) |
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CVE-2026-1518 (GCVE-0-2026-1518)
Vulnerability from cvelistv5 – Published: 2026-02-02 07:17 – Updated: 2026-02-02 14:07
VLAI?
Title
Keycloak: blind server-side request forgery (ssrf) via ciba backchannel notification endpoint in keycloak
Summary
A flaw was found in Keycloak’s CIBA feature where insufficient validation of client-configured backchannel notification endpoints could allow blind server-side requests to internal services.
Severity ?
CWE
- CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Red Hat | Red Hat Build of Keycloak |
cpe:/a:redhat:build_keycloak: |
||||||||||||
|
||||||||||||||
Credits
Red Hat would like to thank Patrick Smith for reporting this issue.
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CVE-2025-13881 (GCVE-0-2025-13881)
Vulnerability from cvelistv5 – Published: 2026-02-02 05:43 – Updated: 2026-02-02 16:28
VLAI?
Title
Org.keycloak.services.resources.admin: keycloak: limited administrator can retrieve sensitive user attributes via admin api
Summary
A flaw was found in Keycloak Admin API. This vulnerability allows an administrator with limited privileges to retrieve sensitive custom attributes via the /unmanagedAttributes endpoint, bypassing User Profile visibility settings.
Severity ?
CWE
- CWE-266 - Incorrect Privilege Assignment
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Red Hat | Red Hat Build of Keycloak |
cpe:/a:redhat:build_keycloak: |
Credits
Red Hat would like to thank Simone Paganessi for reporting this issue.
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CVE-2024-4027 (GCVE-0-2024-4027)
Vulnerability from cvelistv5 – Published: 2026-01-30 14:25 – Updated: 2026-01-30 14:41
VLAI?
Title
Undertow: outofmemoryerror in httpservletrequestimpl.getparameternames() can cause remote dos attacks
Summary
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Severity ?
7.5 (High)
CWE
- CWE-20 - Improper Input Validation
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
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| Red Hat | OpenShift Serverless |
cpe:/a:redhat:serverless:1 |
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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CVE-2026-1190 (GCVE-0-2026-1190)
Vulnerability from cvelistv5 – Published: 2026-01-26 19:36 – Updated: 2026-01-26 20:57
VLAI?
Title
Org.keycloak/keycloak-services: keycloak saml brokering: response delay due to unchecked notonorafter in subjectconfirmationdata
Summary
A flaw was found in Keycloak's SAML brokering functionality. When Keycloak is configured as a client in a Security Assertion Markup Language (SAML) setup, it fails to validate the `NotOnOrAfter` timestamp within the `SubjectConfirmationData`. This allows an attacker to delay the expiration of SAML responses, potentially extending the time a response is considered valid and leading to unexpected session durations or resource consumption.
Severity ?
CWE
- CWE-112 - Missing XML Validation
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | |||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Red Hat | Red Hat Build of Keycloak |
cpe:/a:redhat:build_keycloak: |
|||||||||||||||||
|
|||||||||||||||||||
Credits
Red Hat would like to thank Franz Bettag (Bettag Systems) for reporting this issue.
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CVE-2025-14083 (GCVE-0-2025-14083)
Vulnerability from cvelistv5 – Published: 2026-01-21 12:04 – Updated: 2026-01-21 14:24
VLAI?
Title
Keycloak-server: keycloak: improper access control in admin rest api leads to information disclosure
Summary
A flaw was found in the Keycloak Admin REST API. This vulnerability allows the exposure of backend schema and rules, potentially leading to targeted attacks or privilege escalation via improper access control.
Severity ?
CWE
- CWE-284 - Improper Access Control
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Red Hat | Red Hat Build of Keycloak |
cpe:/a:redhat:build_keycloak: |
Credits
Red Hat would like to thank Muhammad Usman (HackerSSG) (securetackles) for reporting this issue.
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CVE-2025-14559 (GCVE-0-2025-14559)
Vulnerability from cvelistv5 – Published: 2026-01-21 06:13 – Updated: 2026-01-21 14:29
VLAI?
Title
Org.keycloak/keycloak-services: keycloak keycloak-services: business logic flaw allows unauthorized token issuance for disabled users
Summary
A flaw was found in the keycloak-services component of Keycloak. This vulnerability allows the issuance of access and refresh tokens for disabled users, leading to unauthorized use of previously revoked privileges, via a business logic vulnerability in the Token Exchange implementation when a privileged client invokes the token exchange flow.
Severity ?
6.5 (Medium)
CWE
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Red Hat | Red Hat Build of Keycloak |
cpe:/a:redhat:build_keycloak: |
Credits
Red Hat would like to thank Aytac Kalinci for reporting this issue.
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CVE-2026-1035 (GCVE-0-2026-1035)
Vulnerability from cvelistv5 – Published: 2026-01-21 05:52 – Updated: 2026-01-21 14:40
VLAI?
Title
Org.keycloak.protocol.oidc: keycloak refresh token reuse bypass via toctou race condition
Summary
A flaw was found in the Keycloak server during refresh token processing, specifically in the TokenManager class responsible for enforcing refresh token reuse policies. When strict refresh token rotation is enabled, the validation and update of refresh token usage are not performed atomically. This allows concurrent refresh requests to bypass single-use enforcement and issue multiple access tokens from the same refresh token. As a result, Keycloak’s refresh token rotation hardening can be undermined.
Severity ?
CWE
- CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | |||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Red Hat | Red Hat Build of Keycloak |
cpe:/a:redhat:build_keycloak: |
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Credits
Red Hat would like to thank Mohamed Amine ait Ouchebou (mrecho) (Indiesecurity) for reporting this issue.
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CVE-2026-1180 (GCVE-0-2026-1180)
Vulnerability from cvelistv5 – Published: 2026-01-20 12:33 – Updated: 2026-01-21 05:52
VLAI?
Title
Org.keycloak.protocol.oidc: blind server-side request forgery (ssrf) in keycloak oidc dynamic client registration via jwks_uri
Summary
A flaw was identified in Keycloak’s OpenID Connect Dynamic Client Registration feature when clients authenticate using private_key_jwt. The issue allows a client to specify an arbitrary jwks_uri, which Keycloak then retrieves without validating the destination. This enables attackers to coerce the Keycloak server into making HTTP requests to internal or restricted network resources. As a result, attackers can probe internal services and cloud metadata endpoints, creating an information disclosure and reconnaissance risk.
Severity ?
5.8 (Medium)
CWE
- CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | |||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Red Hat | Red Hat Build of Keycloak |
cpe:/a:redhat:build_keycloak: |
|||||||||||||||||||||||||||
|
|||||||||||||||||||||||||||||
Credits
Red Hat would like to thank Lucas Montes (Nirox) for reporting this issue.
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CVE-2026-0976 (GCVE-0-2026-0976)
Vulnerability from cvelistv5 – Published: 2026-01-15 12:06 – Updated: 2026-01-15 14:45
VLAI?
Title
Org.keycloak/keycloak-quarkus-server: keycloak: proxy bypass due to improper handling of matrix parameters in url paths
Summary
A flaw was found in Keycloak. This improper input validation vulnerability occurs because Keycloak accepts RFC-compliant matrix parameters in URL path segments, while common reverse proxy configurations may ignore or mishandle them. A remote attacker can craft requests to mask path segments, potentially bypassing proxy-level path filtering. This could expose administrative or sensitive endpoints that operators believe are not externally reachable.
Severity ?
CWE
- CWE-20 - Improper Input Validation
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
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cpe:/a:redhat:build_keycloak: |
||||||||||||||||||||||||||||||||
|
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Credits
Red Hat would like to thank Alexander Schwartz (RedHat) for reporting this issue.
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CVE-2026-0707 (GCVE-0-2026-0707)
Vulnerability from cvelistv5 – Published: 2026-01-08 03:41 – Updated: 2026-01-08 15:55
VLAI?
Title
Keycloak: keycloak authorization header parsing leading to potential security control bypass
Summary
A flaw was found in Keycloak. The Keycloak Authorization header parser is overly permissive regarding the formatting of the "Bearer" authentication scheme. It accepts non-standard characters (such as tabs) as separators and tolerates case variations that deviate from RFC 6750 specifications.
Severity ?
5.3 (Medium)
CWE
- CWE-551 - Incorrect Behavior Order: Authorization Before Parsing and Canonicalization
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Red Hat | Red Hat Build of Keycloak |
cpe:/a:redhat:build_keycloak: |
Credits
Red Hat would like to thank Guanping Zhang for reporting this issue.
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CVE-2025-14777 (GCVE-0-2025-14777)
Vulnerability from cvelistv5 – Published: 2025-12-16 05:02 – Updated: 2025-12-16 19:09
VLAI?
Title
Keycloak: keycloak idor in realm client creating/deleting
Summary
A flaw was found in Keycloak. An IDOR (Broken Access Control) vulnerability exists in the admin API endpoints for authorization resource management, specifically in ResourceSetService and PermissionTicketService. The system checks authorization against the resourceServer (client) ID provided in the API request, but the backend database lookup and modification operations (findById, delete) only use the resourceId. This mismatch allows an authenticated attacker with fine-grained admin permissions for one client (e.g., Client A) to delete or update resources belonging to another client (Client B) within the same realm by supplying a valid resource ID.
Severity ?
6 (Medium)
CWE
- CWE-289 - Authentication Bypass by Alternate Name
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Red Hat | Red Hat Build of Keycloak |
cpe:/a:redhat:build_keycloak: |
Credits
Red Hat would like to thank Joshua Rogers for reporting this issue.
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CVE-2025-14082 (GCVE-0-2025-14082)
Vulnerability from cvelistv5 – Published: 2025-12-10 09:04 – Updated: 2026-01-16 05:00
VLAI?
Title
Keycloak-services: keycloak admin rest api: improper access control leads to sensitive role metadata information disclosure
Summary
A flaw was found in Keycloak Admin REST (Representational State Transfer) API. This vulnerability allows information disclosure of sensitive role metadata via insufficient authorization checks on the /admin/realms/{realm}/roles endpoint.
Severity ?
CWE
- CWE-284 - Improper Access Control
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Red Hat | Red Hat Build of Keycloak |
cpe:/a:redhat:build_keycloak: |
Credits
Red Hat would like to thank Muhammad Usman (HackerSSG) (securetackles) for reporting this issue.
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CVE-2024-3884 (GCVE-0-2024-3884)
Vulnerability from cvelistv5 – Published: 2025-12-03 18:40 – Updated: 2026-01-26 22:47
VLAI?
Title
Undertow: outofmemory when parsing form data encoding with application/x-www-form-urlencoded
Summary
A flaw was found in Undertow that can cause remote denial of service attacks. When the server uses the FormEncodedDataDefinition.doParse(StreamSourceChannel) method to parse large form data encoding with application/x-www-form-urlencoded, the method will cause an OutOfMemory issue. This flaw allows unauthorized users to cause a remote denial of service (DoS) attack.
Severity ?
7.5 (High)
CWE
- CWE-20 - Improper Input Validation
Assigner
References
| URL | Tags | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.1 |
cpe:/a:redhat:jboss_enterprise_application_platform:8.0::el8 |
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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CVE-2025-5416 (GCVE-0-2025-5416)
Vulnerability from cvelistv5 – Published: 2025-06-20 16:04 – Updated: 2025-11-21 07:36
VLAI?
Title
Keycloak-core: keycloak environment information
Summary
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.
Severity ?
CWE
- CWE-497 - Exposure of Sensitive System Information to an Unauthorized Control Sphere
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Red Hat | Red Hat Build of Keycloak |
cpe:/a:redhat:build_keycloak: |
Credits
Red Hat would like to thank Ibrahim Khorwat (Almadar Aljadid) and Murad Baggas (Almadar Aljadid) for reporting this issue.
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