CVE-2026-7571
highPriorität · verfolgen · 0EPSS 0.005 · 42. PerzentilDEEUUSEPSS · bewertet 2026-10-22
A flaw was found in Keycloak. A low-privilege user, with knowledge of user credentials and client ID, can bypass a security control intended to disable the implicit flow in OpenID Connect (OIDC) clients. By manipulating client data during a session restart, an attacker can obtain an access token that should not be available. This vulnerability can also lead to the exposure of these access tokens in server logs, proxy logs, and HTTP Referrer headers, resulting in sensitive information disclosure.
cvss
Technischer Schweregrad, 0–10. Eine Zeile je Quelle.
Basiswert 0–10 · höher = schwerwiegender · Vektor überfahren zum Auflösen⚠ Quellen uneinig · medium–high · 6.5–7.1
SSVC
Eine Handlungsentscheidung — aus Ausnutzung und Auswirkung.
schwächen
Die CWE-Schwächeklassen, zu denen dies gehört.
betroffene Produkte (8)
Betroffene Produkte und Versionsbereiche.
Advisories (3)
Hersteller- und Ökosystem-Meldungen dazu.
- WID-SEC-W-2026-1612Keycloak: Mehrere SchwachstellenDeutsch2026-05-19csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Keycloak ausnutzen, um Informationen offenzulegen, Daten zu manipulieren, Sicherheitsvorkehrungen zu umgehen und einen Denial of Service zu verursachen.
- GHSA-hq3p-w4xv-x7vpKeycloak: Access token disclosure and implicit flow bypass via forged client data2026-05-19ghsa · osvUS
A flaw was found in Keycloak. A low-privilege user, with knowledge of user credentials and client ID, can bypass a security control intended to disable the implicit flow in OpenID Connect (OIDC) clients. By manipulating client data during a session restart, an attacker can obtain an access token that should not be available. This vulnerability can also lead to the exposure of these access tokens in server logs, proxy logs, and HTTP Referrer headers, resulting in sensitive information disclosure.
- BIT-keycloak-2026-7571Keycloak: keycloak: access token disclosure and implicit flow bypass via forged client data2026-08-25vendor · osvUS
A flaw was found in Keycloak. A low-privilege user, with knowledge of user credentials and client ID, can bypass a security control intended to disable the implicit flow in OpenID Connect (OIDC) clients. By manipulating client data during a session restart, an attacker can obtain an access token that should not be available. This vulnerability can also lead to the exposure of these access tokens in server logs, proxy logs, and HTTP Referrer headers, resulting in sensitive information disclosure.
auch bekannt als (5)
Weitere Namen und Kennungen dieser Entität.
quellen
Welche Quellen diesen Datensatz belegen und wann.
Referenzen (10)
Externe Belege — Patches, Meldungen, Analysen.
- https://access.redhat.com/security/cve/cve-2026-7571cnnvd
- https://nvd.nist.gov/vuln/detail/CVE-2026-7571cnnvd
- https://access.redhat.com/errata/RHSA-2026:19596enisa_euvd
- https://access.redhat.com/errata/RHSA-2026:19597enisa_euvd
- https://access.redhat.com/security/cve/CVE-2026-7571enisa_euvd
- https://bugzilla.redhat.com/show_bug.cgi?id=2464263enisa_euvd
- https://access.redhat.com/errata/RHSA-2026:19596Vendor Advisorynvd
- https://access.redhat.com/errata/RHSA-2026:19597Vendor Advisorynvd
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