SecuriTricks - CVE-2026-4366

Description

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.

Product(s) Impacted

Vendor	Product	Versions
Keycloak	Keycloak	*

Weaknesses

Common security weaknesses mapped to this vulnerability.

CWE-918

Server-Side Request Forgery (SSRF)

The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination.

*CPE(s)

Affected systems and software identified for this CVE.

Type	Vendor	Product	Version	Update	Edition	Language	Software Edition	Target Software	Target Hardware	Other Information
a	keycloak	keycloak	/	/	/	/	/	/	/	/

References

https://access.redhat.com/security/cve/CVE-2026-4366

https://bugzilla.redhat.com/show_bug.cgi?id=2448543

CVSS Score

5.8 / 10

CVSS Data - 3.1

Attack Vector: NETWORK
Attack Complexity: LOW
Privileges Required: NONE
Scope: CHANGED
Confidentiality Impact: LOW
Integrity Impact: NONE
Availability Impact: NONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N

View Vector String

Timeline

Published: March 18, 2026, 4:17 a.m.
Last Modified: March 18, 2026, 2:52 p.m.

Status : Awaiting Analysis

CVE has been recently published to the CVE List and has been received by the NVD.

More info

Source

[email protected]

CVE-2026-4366