CVE-2026-4630

MEDIUM
MEDIUM Priority: 0.02 BB Relevance: 54/100
Published: 2026-05-19 Modified: 2026-10-26 First seen: 2026-10-29 Status: active

Attack Surface

Network No Interaction Conf. Impact Integ. Impact

CVSS Vector Breakdown

AV: Network
AC: High
PR: Low
UI: None
S: Unchanged
C: High
I: High
A: None

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.

Weakness Classification (1)

Affected Software (1)

VendorProductVersion
redhat build_of_keycloak 26.4 – 26.4.12

Bug Bounty Relevance

54 / 100
✓ Network accessible
✓ No user interaction

CVSS Score

6.8 / 10.0 v3.1
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N

EPSS — Exploitation Probability

0.30%
Raw Score 0.003040
Percentile 23.1%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00304
2026-10-28
0.00304

Intelligence Sources

nvd ref →