CVE-2020-10748

keycloak: top-level navigations to data URLs resulting in XSS are possible (incomplete fix of CVE-2020-1697)

Severity Score

6.1

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

A flaw was found in Keycloak's data filter, in version 10.0.1, where it allowed the processing of data URLs in some circumstances. This flaw allows an attacker to conduct cross-site scripting or further attacks.

Se encontró un fallo en el filtro de datos de Keycloak, en versión 10.0.1, donde permitía el procesamiento de las URL de datos en algunas circunstancias. Este fallo permite a un atacante conducir ataques de tipo cross-site scripting o mas ataques

A flaw was found in Keycloak's data filter, where it allowed the processing of data URLs in some circumstances. This flaw allows an attacker to conduct cross-site scripting or further attacks.

Red Hat Single Sign-On 7.4 is a standalone server, based on the Keycloak project, that provides authentication and standards-based single sign-on capabilities for web and mobile applications. This release of Red Hat Single Sign-On 7.4.1 serves as a replacement for Red Hat Single Sign-On 7.4.0, and includes bug fixes and enhancements, which are documented in the Release Notes document linked to in the References. Issues addressed include code execution and cross site scripting vulnerabilities.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

None

Integrity

Partial

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2020-03-20 CVE Reserved
2020-07-02 CVE Published
2024-08-04 CVE Updated
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CAPEC

References (2)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://bugzilla.redhat.com/show_bug.cgi?id=1836786	2020-07-02
https://access.redhat.com/security/cve/CVE-2020-10748	2020-07-02

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Redhat Search vendor "Redhat"		Keycloak Search vendor "Redhat" for product "Keycloak"				10.0.1 Search vendor "Redhat" for product "Keycloak" and version "10.0.1"		-		Affected
Redhat Search vendor "Redhat"		Single Sign-on Search vendor "Redhat" for product "Single Sign-on"				< 7.4.1 Search vendor "Redhat" for product "Single Sign-on" and version " < 7.4.1"		-		Affected