CVE-2026-1035

low Red Hat
CVSS v3 Base Score
3.1
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N
Published: January 21, 2026
Last Modified: January 21, 2026
Vendor: Red Hat

Description

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.

CWE

CWE-367

Affected Products

Red Hat Build of KeycloakRed Hat JBoss Enterprise Application Platform 8Red Hat JBoss Enterprise Application Platform Expansion PackRed Hat Single Sign-On 7

References

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