BIT-keycloak-2026-7571

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Import Source
https://github.com/bitnami/vulndb/tree/main/data/keycloak/BIT-keycloak-2026-7571.json
JSON Data
https://api.osv.dev/v1/vulns/BIT-keycloak-2026-7571
Aliases
Published
2026-08-25T11:42:36.952Z
Modified
2026-08-26T11:15:10.628077900Z
Summary
Keycloak: keycloak: access token disclosure and implicit flow bypass via forged client data
Details

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.

Database specific
{
    "cpes": [
        "cpe:2.3:a:redhat:build_of_keycloak:*:*:*:*:*:*:*:*",
        "cpe:2.3:a:keycloak:keycloak:*:*:*:*:*:*:*:*"
    ],
    "severity": "High"
}
References

Affected packages

Bitnami / keycloak

Package

Name
keycloak
Purl
pkg:bitnami/keycloak

Severity

  • 7.1 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N CVSS Calculator

Affected ranges

Type
SEMVER
Events
Introduced
26.4.0
Fixed
26.4.12

Database specific

source
"https://github.com/bitnami/vulndb/tree/main/data/keycloak/BIT-keycloak-2026-7571.json"