Keycloak: Account takeover via idp-auto-link authentication (CVE-2026-97175)
A flaw in Keycloak’s idp-auto-link authenticator allows attackers to perform account takeover by linking external identities to local accounts using unverified email addresses.
CVE search metadata
CVE search record: CVE-2026-97175. Severity: high. CVSS: 8.8. KEV: no. Product: Keycloak. Brief: Keycloak: Account takeover via idp-auto-link authentication (CVE-2026-97175). Brief link: https://feed.craftedsignal.io/briefs/2026-11-keycloak-account-takeover/
Triage facts
Revision 1- Applicability
- Keycloak
- Evidence
- Unknown
- Severity
- High
- Sources
- 1 public source
- Freshness
- Revision 1Nov 5, 22:33 UTC
- Vulnerabilities
- 1 CVE
- Source quality
- A2Roughly even chance
CVE-2026-97175 is a security flaw in the idp-auto-link authenticator of the keycloak-services component, which handles user identity federation. The vulnerability 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.
Impact
An attacker can take over a victim's account by using a matching unverified email address at a brokered provider.