Improper Restriction of Excessive Authentication Attempts Affecting keycloak-services package, versions *


Severity

Recommended
0.0
medium
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.35% (27th percentile)

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  • Snyk IDSNYK-RHEL8-KEYCLOAKSERVICES-19728069
  • published13 Sept 2026
  • disclosed9 Sept 2026

Introduced: 9 Sep 2026

CVE-2026-88770  (opens in a new tab)
CWE-307  (opens in a new tab)

How to fix?

There is no fixed version for RHEL:8 keycloak-services.

NVD Description

Note: Versions mentioned in the description apply only to the upstream keycloak-services package and not the keycloak-services package as distributed by RHEL. See How to fix? for RHEL:8 relevant fixed versions and status.

A flaw was found in the Device Authorization Grant flow of Keycloak, an identity and access management solution. The issue occurs because the token redemption process fails to check if a user account is currently locked due to brute-force protection. If an attacker has an active session for a locked account, they can complete the device login process and receive new security tokens. This allows the attacker to maintain access to the account even when it should be temporarily disabled to prevent unauthorized entry.

CVSS Base Scores

version 3.1