Vulnerabilities > CVE-2021-27736 - XXE vulnerability in Fusionauth Saml V2

CVSS 6.5 - MEDIUM

Attack vector

NETWORK

Attack complexity

LOW

Privileges required

LOW

Confidentiality impact

HIGH

Integrity impact

NONE

Availability impact

NONE

network

low complexity

fusionauth

CWE-611

NVD

Published: 2021-04-22

Updated: 2024-11-21

Summary

FusionAuth fusionauth-samlv2 before 0.5.4 allows XXE attacks via a forged AuthnRequest or LogoutRequest because parseFromBytes uses javax.xml.parsers.DocumentBuilderFactory unsafely.

Vulnerable Configurations

Part	Description	Count
Application	Fusionauth Fusionauth Saml V2 - Fusionauth Saml V2 0.1.0 Fusionauth Saml V2 0.2.0 Fusionauth Saml V2 0.2.1 Fusionauth Saml V2 0.2.2 Fusionauth Saml V2 0.2.3 Fusionauth Saml V2 0.2.4 Fusionauth Saml V2 0.3.0 Fusionauth Saml V2 0.3.1 Fusionauth Saml V2 0.3.2 Fusionauth Saml V2 0.3.3 Fusionauth Saml V2 0.3.4 Fusionauth Saml V2 0.3.5 Fusionauth Saml V2 0.4.0 Fusionauth Saml V2 0.5.0 Fusionauth Saml V2 0.5.1 Fusionauth Saml V2 0.5.2 Fusionauth Saml V2 0.5.3	18

Common Weakness Enumeration (CWE)

CWE-611 - Improper Restriction of XML External Entity Reference ('XXE')

Summary

Vulnerable Configurations

Common Weakness Enumeration (CWE)

References