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CVE-2026-11800

גבוהה 8.1

תיאור (מקור, אנגלית)

A flaw was found in Keycloak. This JWT algorithm confusion vulnerability in the JWT Authorization Grant flow allows an attacker with valid client credentials to bypass signature verification. By forging an assertion, the attacker can create unauthorized access tokens. This enables the attacker to impersonate any federated user linked to the affected Identity Provider, leading to unauthorized access and potential privilege escalation.

מדדים

CVSS 3.1
8.1 (HIGH) מקור הציון: CNA CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
EPSS — סבירות ניצול
0% (אחוזון 000) נכון ל-14/8/2026
CWE
CWE-347

מוצרים מושפעים

redhat: build of keycloak

קישורים