CVE-2020-36321

HIGH EPSS 64.6%
Published Apr 23, 20215y ago · Modified Jun 17, 20262w ago
7.5 CVSS 3.1
High
Find Similar
Published Apr 23, 2021 5y ago
Last Modified Jun 17, 2026 2w ago

Description

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.

CVSS Details

Base Score
7.5
Exploitability
3.9
Impact
3.6
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality High
Integrity None
Availability None

Threat Intelligence

EPSS Exploit Probability
64.6% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-22 Path Traversal Resource Mgmt

Affected Products 4

VendorProductVersionRange
vaadinflow*≥2.0.0  –  <2.4.2
vaadinflow*≥3.0.0  –  <5.0.0
vaadinvaadin*≥14.0.0  –  <14.4.3
vaadinvaadin*≥15.0.0  –  <18.0.0

References 2

  • github.com https://github.com/vaadin/flow/pull/9392
    PatchThird Party Advisory
  • vaadin.com https://vaadin.com/security/cve-2020-36321
    Vendor Advisory

Remediation

  • github.com https://github.com/vaadin/flow/pull/9392
    PatchThird Party Advisory