CVE-2026-4633: build of keycloak Version not applicable in the source CPE; +2 more affected products

CVE-2026-4633 affects org.keycloak:keycloak-services. CVSS 3.1 base score 3.7 (LOW, NVD). EPSS 0.00379 (percentile 0.30704), scored 22-Oct-2026. Affected range: >= 26.5.0, < 26.6.1. Fixed version: 26.6.1. Affected range: < 26.4.12. Fixed version: 26.4.12.

Affected technology

build of keycloak · Version not applicable in the source CPE
redhat

Red Hat build of Keycloak 26.4.12 · Exact affected versions not specified by the source
Red Hat

Red Hat Build of Keycloak · Exact affected versions not specified by the source
Red Hat

Component: Not specified by the source

Attack conditions (Vendor/CNA, CVSS 3.1): Network (remote) · No privileges required · No user interaction required

Attack conditions (NVD, CVSS 3.1): Network (remote) · No privileges required · No user interaction required

What an attacker can do

A remote attacker can exploit differential error messages during the identity-first login flow when Organizations are enabled. Vendor/CNA’s CVSS 3.1 assessment (base score 3.7/10) rates confidentiality impact as low; integrity and availability impact as none. NVD’s CVSS 3.1 assessment (base score 3.7/10) rates confidentiality impact as low; integrity and availability impact as none.

Published 23-Oct-2026 06:11 UTC

CWE: CWE-209
Product: org.keycloak:keycloak-services
CCR priority: 14.9 /100 (P5)
CVSS 3.1: 3.7 /10 · CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N · NVD
EPSS: 0.00379 · percentile 0.30704 · 2026-10-22
KEV: no

Provenance

FIRST EPSS daily exploit-probability · Source record · observed 2026-10-23 06:11:59.600832+00:00 UTC
GitHub Advisory Database · Source record · observed 2026-10-23 07:17:21.678485+00:00 UTC
NVD CVE API 2.0 · Source record · observed 2026-10-23 06:11:01.814928+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2026-4633.html