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CVE-2026-1529

Org.keycloak.services.resources.organizations: keycloak: unauthorized organization registration via improper invitation token validation

Published: Feb 9, 2026Updated: Jul 15, 2026 Sources: CVE List NVD GHSA BDUCWE-347
8.1HIGH
NVD MITRE
EPSS Score
0.5%
Top 62.8%
CISA KEV
Not in KEV
Exploits
1 Known
Remediation
Patch Available
Self-Check
OpenVAS

Description

A flaw was found in Keycloak. An attacker can exploit this vulnerability by modifying the organization ID and target email within a legitimate invitation token's JSON Web Token (JWT) payload. This lack of cryptographic signature verification allows the attacker to successfully self-register into an unauthorized organization, leading to unauthorized access.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:LUI:NS:UC:HI:HA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:NAvailability
None
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Weaknesses

CWE-347

Affected Products

Red Hat Inc.
commercial·USaka Red Hat
Red Hat build of Keycloak 26.2On-prem
Operating Systems / linux-distro
Red Hat build of Keycloak 26.2.13LibraryLibrary
OSS Libraries
Red Hat build of Keycloak 26.4On-premWeb App
Web & CMS Plugins
Red Hat build of Keycloak 26.4.9On-premSecurity Product
Security Products / identity-access-mgmt
Red Hat Build of KeycloakOn-prem
Operating Systems / linux-distro
Maven
package-ecosystem
org.keycloak:keycloak-services
OSS Libraries

Exploitability

1 exploit source identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details
Official Patch Available
Workaround Available
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique
Collection
View detailed technique mapping

References

https://access.redhat.com/errata/RHSA-2026:2363
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:2364
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:2365
access.redhat.com
and 13 more references View all →

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