CVE-2026-18963 Red Hat — Exploit & Vulnerability Details CRITICAL

Parameter	Value
CVSS	9.1 (CRITICAL)
Type	CWE-640
Vendor	Red Hat
Public PoC	No

A flaw was found in the reset-credentials flow of the keycloak-services component, which is the core engine for identity and access management in Red Hat Build of Keycloak. The issue allows an unauthenticated attacker to force the password reset process for any user without needing to click the required email verification link. This can result in the attacker gaining full control over target user accounts by directly setting new credentials.

Attack Parameters

Attack Vector

Network

Can be exploited remotely

Attack Complexity

Low

Easy to exploit

Privileges Required

None

No privileges needed

User Interaction

None

No user interaction needed

Impact Assessment

Confidentiality

High

Complete data leak

Integrity

High

Complete data modification

Availability

None

No disruption

CVSS Vector v3.1

Weakness Type (CWE)

CWE-640

Vulnerable Products

red hat:red hat single sign-on 7 red hat:red hat build of keycloak 26.6.6 red hat:red hat build of keycloak 26.4.15 red hat:red hat jboss enterprise application platform expansion pack red hat:red hat build of keycloak 26.6 red hat:red hat build of keycloak 26.4