CVE-2023-6291

HIGH 7.1

Keycloak: redirect_uri validation bypass

CVSS Score

7.1

EPSS Score

0.0%

EPSS Percentile

0th

A flaw was found in the redirect_uri validation logic in Keycloak. This issue may allow a bypass of otherwise explicitly allowed hosts. A successful attack may lead to an access token being stolen, making it possible for the attacker to impersonate other users.

CWE	CWE-601
Vendor	red hat
Product	red hat build of keycloak 22
Published	Jan 26, 2024
Last Updated	Nov 11, 2025

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CVSS v3 Breakdown

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

Low

Affected Versions

Red Hat / Red Hat build of Keycloak 22

All versions affected

Red Hat / Red Hat build of Keycloak 22

All versions affected

Red Hat / Red Hat build of Keycloak 22

All versions affected

Red Hat / Red Hat build of Keycloak 22.0.7

All versions affected

Red Hat / Red Hat Single Sign-On 7

All versions affected

Red Hat / Red Hat Single Sign-On 7.6 for RHEL 7

All versions affected

Red Hat / Red Hat Single Sign-On 7.6 for RHEL 7

All versions affected

Red Hat / Red Hat Single Sign-On 7.6 for RHEL 8

All versions affected

Red Hat / Red Hat Single Sign-On 7.6 for RHEL 8

All versions affected

Red Hat / Red Hat Single Sign-On 7.6 for RHEL 9

All versions affected

Red Hat / Red Hat Single Sign-On 7.6 for RHEL 9

All versions affected

Red Hat / RHEL-8 based Middleware Containers

All versions affected

Red Hat / RHEL-8 based Middleware Containers

All versions affected

Red Hat / RHEL-8 based Middleware Containers

All versions affected

Red Hat / Single Sign-On 7.6.6

All versions affected

Red Hat / Migration Toolkit for Applications 6

All versions affected

Red Hat / Migration Toolkit for Applications 7

All versions affected

Red Hat / OpenShift Serverless

All versions affected

Red Hat / Red Hat Data Grid 8

All versions affected

Red Hat / Red Hat Decision Manager 7

All versions affected

Red Hat / Red Hat Fuse 7

All versions affected

Red Hat / Red Hat JBoss Data Grid 7

All versions affected

Red Hat / Red Hat JBoss Enterprise Application Platform 6

All versions affected

Red Hat / Red Hat Process Automation 7

All versions affected

References

NVD ↗ CVE.org ↗ EPSS Data ↗