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.
References
| Link | Resource |
|---|---|
| https://access.redhat.com/errata/RHSA-2026:19596 | Vendor Advisory |
| https://access.redhat.com/errata/RHSA-2026:19597 | Vendor Advisory |
| https://access.redhat.com/security/cve/CVE-2026-7571 | Vendor Advisory |
| https://bugzilla.redhat.com/show_bug.cgi?id=2464263 | Vendor Advisory |
Configurations
History
03 Jun 2026, 19:41
| Type | Values Removed | Values Added |
|---|---|---|
| CPE | cpe:2.3:a:redhat:build_of_keycloak:*:*:*:*:*:*:*:* | |
| First Time |
Redhat
Redhat build Of Keycloak |
|
| References | () https://access.redhat.com/errata/RHSA-2026:19596 - Vendor Advisory | |
| References | () https://access.redhat.com/errata/RHSA-2026:19597 - Vendor Advisory | |
| References | () https://access.redhat.com/security/cve/CVE-2026-7571 - Vendor Advisory | |
| References | () https://bugzilla.redhat.com/show_bug.cgi?id=2464263 - Vendor Advisory |
20 May 2026, 17:16
| Type | Values Removed | Values Added |
|---|---|---|
| References |
|
20 May 2026, 12:16
| Type | Values Removed | Values Added |
|---|---|---|
| References |
|
19 May 2026, 12:16
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-05-19 12:16
Updated : 2026-06-03 19:41
NVD link : CVE-2026-7571
Mitre link : CVE-2026-7571
CVE.ORG link : CVE-2026-7571
JSON object : View
Products Affected
redhat
- build_of_keycloak
CWE
CWE-472
External Control of Assumed-Immutable Web Parameter