BIT-keycloak-2026-4636

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Import Source
https://github.com/bitnami/vulndb/tree/main/data/keycloak/BIT-keycloak-2026-4636.json
JSON Data
https://api.osv.dev/v1/vulns/BIT-keycloak-2026-4636
Aliases
Published
2026-08-25T11:42:31Z
Modified
2026-09-08T08:48:07Z
Summary
Keycloak: keycloak: uma policy bypass allows authenticated users to gain unauthorized access to victim-owned resources.
Details

A flaw was found in Keycloak. An authenticated user with the uma_protection role can bypass User-Managed Access (UMA) policy validation. This allows the attacker to include resource identifiers owned by other users in a policy creation request, even if the URL path specifies an attacker-owned resource. Consequently, the attacker gains unauthorized permissions to victim-owned resources, enabling them to obtain a Requesting Party Token (RPT) and access sensitive information or perform unauthorized actions.

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

Affected packages

Bitnami / keycloak

Package

Name
keycloak
Purl
pkg:bitnami/keycloak

Severity

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

Affected ranges

Type
SEMVER
Events
Introduced
26.2.0
Fixed
26.2.1
Introduced
26.2.15
Fixed
26.3.0
Introduced
26.4.0
Fixed
26.4.1
Introduced
26.4.11
Fixed
26.5.0

Database specific

source 
"https://github.com/bitnami/vulndb/tree/main/data/keycloak/BIT-keycloak-2026-4636.json"