CVE-2026-1529

high Red Hat
CVSS v3 Base Score
8.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
EPSS Score
0.0%
Exploitation probability in 30 days
Top 99% most likely to be exploited
Attack Characteristics
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Confidentiality
High
Integrity
High
Availability
None
Published: February 9, 2026 (94 days ago)
Last Modified: February 9, 2026
Vendor: Red Hat
Fix Available: ✓ Yes

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.

CWE

CWE-347

Affected Products

Red Hat build of Keycloak 26.2Red Hat build of Keycloak 26.2.13Red Hat build of Keycloak 26.4Red Hat build of Keycloak 26.4.9

Fix Status

✅ Fix Available

References

🔗 bugzilla.redhat.com 🔗 www.cve.org 🔗 nvd.nist.gov