CVE-2026-3429
mediumEPSS 0.003 · 24. PerzentilDEEUUSEPSS · bewertet 2026-10-17
A flaw was identified in the Account REST API of Keycloak that allows a user authenticated at a lower security level to perform sensitive actions intended only for higher-assurance sessions. Specifically, an attacker who has already obtained a victim’s password can delete the victim’s registered MFA/OTP credential without first proving possession of that factor. The attacker can then register their own MFA device, effectively taking full control of the account. This weakness undermines the intended protection provided by multi-factor authentication.
cvss
Technischer Schweregrad, 0–10. Eine Zeile je Quelle.
Basiswert 0–10 · höher = schwerwiegender · Vektor überfahren zum Auflösen
SSVC
Eine Handlungsentscheidung — aus Ausnutzung und Auswirkung.
schwächen
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betroffene Produkte (8)
Betroffene Produkte und Versionsbereiche.
Advisories (3)
Hersteller- und Ökosystem-Meldungen dazu.
- WID-SEC-W-2026-0560Keycloak: Schwachstelle ermöglicht Umgehen von SicherheitsvorkehrungenDeutsch2026-03-01csaf · cert_bundDE
Ein entfernter, authentisierter Angreifer kann eine Schwachstelle in Keycloak ausnutzen, um Sicherheitsvorkehrungen zu umgehen.
- GHSA-8g9r-9wjw-37j4Keycloak: Improper Access Control Leading to MFA Deletion and Account Takeover in Keycloak Account REST API2026-03-11ghsa · osvUS
A flaw was identified in the Account REST API of Keycloak that allows a user authenticated at a lower security level to perform sensitive actions intended only for higher-assurance sessions. Specifically, an attacker who has already obtained a victim’s password can delete the victim’s registered MFA/OTP credential without first proving possession of that factor. The attacker can then register their own MFA device, effectively taking full control of the account. This weakness undermines the intended protection provided by multi-factor authentication.
- BIT-keycloak-2026-3429Org.keycloak.services.resources.account: improper access control leading to mfa deletion and account takeover in keycloak account rest api2026-08-25vendor · osvUS
A flaw was identified in the Account REST API of Keycloak that allows a user authenticated at a lower security level to perform sensitive actions intended only for higher-assurance sessions. Specifically, an attacker who has already obtained a victim’s password can delete the victim’s registered MFA/OTP credential without first proving possession of that factor. The attacker can then register their own MFA device, effectively taking full control of the account. This weakness undermines the intended protection provided by multi-factor authentication.
auch bekannt als (5)
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quellen
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Referenzen (11)
Externe Belege — Patches, Meldungen, Analysen.
- https://access.redhat.com/security/cve/cve-2026-3429cnnvd
- https://github.com/keycloak/keycloak/releasesPatchcnnvd
- https://vigilance.fr/vulnerability/Keycloak-read-write-access-via-Admin-REST-API-50335cnnvd
- https://access.redhat.com/errata/RHSA-2026:6477enisa_euvd
- https://access.redhat.com/errata/RHSA-2026:6478enisa_euvd
- https://access.redhat.com/security/cve/CVE-2026-3429enisa_euvd
- https://bugzilla.redhat.com/show_bug.cgi?id=2443771enisa_euvd
- https://access.redhat.com/errata/RHSA-2026:6477Vendor Advisorynvd
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