Directory traversal in development mode handler in Vaadin 14 and 15-17
CVE-2020-36321

5.9MEDIUM

Key Information:

Vendor

Vaadin

Status
Vaadin
Flow-server
Vendor
CVE Published:
23 April 2021

What is CVE-2020-36321?

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.

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Deploy the Patch

Affected Version(s)

flow-server 2.0.0

Vaadin 14.0.0

References

https://vaadin.com/security/cve-2020-36321
x_refsource_MISC
https://github.com/vaadin/flow/pull/9392
x_refsource_MISC

CVSS V3.1

Score:
5.9
Severity:
MEDIUM
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

JSON
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