CVE-2026-4630

6.8 MEDIUM

A flaw was found in Keycloak

Published: 2026-05-19 · Last updated: 2026-06-03

Severity and scoring

CVSS: 6.8 MEDIUM
Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
CWE: CWE-639

Affected products

Vendor	Product
redhat	build_of_keycloak

Description

A flaw was found in Keycloak. An authenticated client could exploit an Insecure Direct Object Reference (IDOR) vulnerability in the Authorization Services Protection API endpoint. By knowing or obtaining a resource's unique identifier (UUID) belonging to another Resource Server within the same realm, the client could bypass authorization checks. This allows the client to perform unauthorized GET, PUT, and DELETE operations on resources, leading to information disclosure and potential unauthorized modification or deletion of data.

Source: NVD

References

[NVD]https://nvd.nist.gov/vuln/detail/CVE-2026-4630
[Vendor advisory]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-2026-4630
[Vendor advisory]https://bugzilla.redhat.com/show_bug.cgi?id=2450245

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