Vulnerability DatabaseCVE-2020-36321
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CVE-2020-36321
April 23, 2021
Improper URL validation in development mode handler in com.vaadin:flow-server versions 2.0.0 through 2.4.1 (Vaadin 14.0.0 through 14.4.2), and 3.0 prior to 5.0 (Vaadin 15 prior to 18) allows attacker to request arbitrary files stored outside of intended frontend resources folder.
Affected Packages
com.vaadin:flow-server (JAVA):
Affected version(s) >=2.0.0 <2.4.2
Fix Suggestion:
Update to version 2.4.2
com.vaadin:flow-server (JAVA):
Affected version(s) >=3.0.0 <5.0.0
Fix Suggestion:
Update to version 5.0.0
Related Resources (4)
https://nvd.nist.gov/vuln/detail/CVE-2020-36321
https://github.com/vaadin/flow/security/advisories/GHSA-49r2-73m6-pp8f
https://vaadin.com/security/cve-2020-36321
https://github.com/vaadin/flow/pull/9392
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CVSS v4
Base Score:
8.2
Attack Vector
NETWORK
Attack Complexity
HIGH
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
NONE
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
5.9
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
CVSS v2
Base Score:
5
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
Weakness Type (CWE)
Improper Input Validation
CWE-20
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CWE-22
EPSS
Base Score:
0.55