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Red Hat Build Of Keycloak CVE-2026-4366

| EUVDEUVD-2026-12762 MEDIUM
Server-Side Request Forgery (SSRF) (CWE-918)
2026-03-18 redhat
5.8
CVSS 3.1 · NVD
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Severity by source

NVD PRIMARY
5.8 MEDIUM
AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N
Red Hat
5.8 MEDIUM
qualitative

Primary rating from NVD.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
Low
Integrity
None
Availability
None

Lifecycle Timeline

3
EUVD ID Assigned
Mar 18, 2026 - 04:30 euvd
EUVD-2026-12762
Analysis Generated
Mar 18, 2026 - 04:30 vuln.today
CVE Published
Mar 18, 2026 - 04:02 nvd
MEDIUM 5.8

DescriptionCVE.org

A flaw was identified in Keycloak, an identity and access management solution, where it improperly follows HTTP redirects when processing certain client configuration requests. This behavior allows an attacker to trick the server into making unintended requests to internal or restricted resources. As a result, sensitive internal services such as cloud metadata endpoints could be accessed. This issue may lead to information disclosure and enable attackers to map internal network infrastructure.

AnalysisAI

A remote code execution vulnerability in A flaw (CVSS 5.8) that allows an attacker. Remediation should follow standard vulnerability management procedures.

Technical ContextAI

CWE-918 (Server-Side Request Forgery). Affects A flaw.

RemediationAI

Monitor vendor channels for patch availability.

CVE-2026-16442 CRITICAL
9.8 Aug 05

Account takeover in Keycloak (Red Hat build of Keycloak, Red Hat Single Sign-On 7) arises because the IdP-initiated SAML

CVE-2026-18963 CRITICAL
9.1 Aug 18

Account takeover in Red Hat Build of Keycloak allows an unauthenticated attacker to abuse the reset-credentials flow in

CVE-2026-16443 CRITICAL
9.1 Aug 05

Authentication bypass in Red Hat Build of Keycloak (and Red Hat Single Sign-On 7) lets an unauthenticated attacker forge

CVE-2026-15572 HIGH
8.8 Aug 05

Privilege escalation in Red Hat Build of Keycloak's Dynamic Client Registration (DCR) grants an attacker with low-privil

CVE-2026-9800 HIGH
8.1 Jun 25

Authorization bypass in the Keycloak Policy Enforcer allows any authenticated user to circumvent all enforced access con

CVE-2026-15573 HIGH
8.1 Aug 05

URI normalization bypass in Keycloak's Authorization Services PathMatcher allows authenticated low-privilege users to re

CVE-2026-16102 HIGH
8.1 Aug 05

Privilege escalation in Keycloak's Dynamic Client Registration (DCR) component allows attackers with standard user accou

CVE-2026-18214 HIGH
8.1 Jul 31

Token exchange in Keycloak bypasses Google Workspace domain allowlist restrictions, enabling any valid Google account ho

CVE-2026-11800 HIGH
8.1 Jun 25

Signature-verification bypass in Keycloak (and Red Hat's Keycloak-based products such as Red Hat Single Sign-On 7 and Re

CVE-2026-18215 HIGH
8.1 Jul 31

Tenant-restriction bypass in Keycloak's Microsoft identity provider integration allows attackers holding any valid Micro

CVE-2026-18967 HIGH
8.1 Aug 06

Session hijacking via SAML assertion replay in Keycloak's SAML broker component allows adjacent-network attackers to aut

CVE-2026-7504 HIGH
8.1 May 19

Open redirect in Red Hat build of Keycloak permits remote attackers to send victims to attacker-controlled hosts by abus

Vendor StatusVendor

Debian

Bug #1088287
keycloak
Release Status Fixed Version Urgency
open - -

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CVE-2026-4366 vulnerability details – vuln.today

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