Authentication Bypass by Primary Weakness Affecting keycloak-25 package, versions <25.0.6+e1


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.49% (40th percentile)

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  • Snyk IDSNYK-ECHOLATEST-KEYCLOAK25-19435063
  • published31 Aug 2026
  • disclosed28 May 2026

Introduced: 28 May 2026

CVE-2026-9798  (opens in a new tab)
CWE-305  (opens in a new tab)

How to fix?

Upgrade Echo:latest keycloak-25 to version 25.0.6+e1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream keycloak-25 package and not the keycloak-25 package as distributed by Echo. See How to fix? for Echo:latest relevant fixed versions and status.

A flaw was found in Keycloak, an open-source identity and access management solution. When a user account is temporarily locked due to repeated failed login attempts, an attacker with valid client credentials can exploit the Client-Initiated Backchannel Authentication (CIBA) flow to bypass this brute-force protection. This allows continued authentication attempts and token issuance even when the account should be locked, potentially enabling further unauthorized access attempts.

CVSS Base Scores

version 3.1