CVE-2026-97175highCWE-287

CVE-2026-97175: high-severity vulnerability in Red Hat build of Keycloak 26.4.17

Keycloak-services: keycloak-services: unverified idp email auto-linking enables account takeover

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21Vexday Risk Score

No sign of exploitation. It has an official Brazilian government alert.

ssvc Trackcvss 8.8epss 0.4%
Official alert in Brazil

Brazil's federal government published an alert, recommendation or bulletin that cites this vulnerability.

Source: CTIR Gov (GSI) and CISC Gov.br, under the CC BY-ND 3.0 license.
A flaw was found in the idp-auto-link authenticator of the keycloak-services component, which handles user identity federation. The issue occurs when Keycloak automatically links an incoming identity from an external provider to an existing local account based on an email address without verifying if the provider has validated that email. This can allow an attacker to take over a victim's account by using a matching unverified email address at a brokered provider.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products
Red Hat · Red Hat build of Keycloak 26.4.17Red Hat · Red Hat build of Keycloak 26.6.8Red Hat · Red Hat Single Sign-On 7
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