CVE-2026-4630

MediumCVSS 6.8/10Last modified Oct 26, 2026

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.

Metrics

CVSS 3.1 6.8/10CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N

Weakness enumeration

CWE-639

Affected software

VendorProductVersions
Red HatRed Hat build of Keycloak 26.4—
Red HatRed Hat build of Keycloak 26.4—
Red HatRed Hat build of Keycloak 26.4—
Red HatRed Hat build of Keycloak 26.4.12—

References

Timeline

Published
May 19, 2026
Last modified
Oct 26, 2026
NVD status
Analyzed

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CVE-2026-4630: Medium severity, CVSS 6.8 | Vulnix