// For flags

CVE-2020-1727

keycloak: missing input validation in IDP authorization URLs

Severity Score

5.4
*CVSS v3.1

Exploit Likelihood

< 1%
*EPSS

Affected Versions

1
*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

A vulnerability was found in Keycloak before 9.0.2, where every Authorization URL that points to an IDP server lacks proper input validation as it allows a wide range of characters. This flaw allows a malicious to craft deep links that introduce further attack scenarios on affected clients.

Se encontró una vulnerabilidad en Keycloak versiones anteriores a 9.0.2, donde cada URL de autorización que apunta a un servidor IDP que carece de una comprobación de entrada inapropiada, ya que permite una amplia gama de caracteres. Este fallo permite a un malicioso diseñar enlaces profundos que introducen escenarios de ataque adicionales en los clientes afectados

A flaw was found in Keycloak, where every Authorization URL that points to an IDP server lacks proper input validation as it allows a wide range of characters. This flaw allows a malicious to craft deep links that introduce further attack scenarios on affected clients.

Red Hat support for Spring Boot provides an application platform that reduces the complexity of developing and operating applications for OpenShift as a containerized platform. This release of Red Hat support for Spring Boot 2.2.6 serves as a replacement for Red Hat support for Spring Boot 2.1.13, and includes security and bug fixes and enhancements. For further information, refer to the release notes linked to in the References section. Issues addressed include a cross site scripting vulnerability.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
None
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None
Attack Vector
Network
Attack Complexity
Low
Authentication
Single
Confidentiality
Partial
Integrity
Partial
Availability
None
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2019-11-27 CVE Reserved
  • 2020-06-01 CVE Published
  • 2024-08-04 CVE Updated
  • 2025-03-30 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-20: Improper Input Validation
CAPEC
Affected Vendors, Products, and Versions (1)