Keycloak Protection API allows authenticated clients to access and modify resources owned by other Resource Servers

TRUNG BÌNH 6.8CVE-2026-4630 · BIT-keycloak-2026-4630 · GHSA-c739-f6xw-6pv2 · Công bố 19/05/2026 · cập nhật 26/10/2026

Tóm tắt nhanh

CVE-2026-4630 là lỗ hổng mức TRUNG BÌNH (CVSS 6.8) ảnh hưởng org.keycloak:keycloak-services, build of keycloak (redhat).
Xác suất bị khai thác trong 30 ngày tới (EPSS): 0.30%, cao hơn 23.2% các lỗ hổng khác.
Cách xử lý: cập nhật lên 26.6.2, 26.4.12 hoặc mới hơn.

Gói / sản phẩm	Phiên bản bị ảnh hưởng	Phiên bản đã vá
org.keycloak:keycloak-services Maven	`< 26.6.2`	`26.6.2`
build of keycloak redhat	`≥ 26.4, < 26.4.12`	`26.4.12`

Mô tả

Keycloak's Authorization Services feature exposes a User-Managed Access Protection API that include 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, an authenticated 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.

Mô tả của NVD

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.