CVE-2020-36321
Medium
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.
SeverityMedium
CVSS5.9
Exploit probability—
Product
Vaadin Flow
PublishedApr 23, 2021
First seenApr 23, 2021
Weakness typeCWE-22Path traversal
How to fix
Update
- vaadin flow2.4.2, 5.0.0 or later
- vaadin vaadin14.4.3, 18.0.0 or later
- com.vaadin:flow-server5.0.0, 2.4.2 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| vaadin flow | 2.0.0 ≤ v < 2.4.2, 3.0.0 ≤ v < 5.0.0 | 2.4.2, 5.0.0 |
| vaadin vaadin | 14.0.0 ≤ v < 14.4.3, 15.0.0 ≤ v < 18.0.0 | 14.4.3, 18.0.0 |
| com.vaadin:flow-serverMaven | 3.0.0 ≤ v < 5.0.0, 2.0.0 ≤ v < 2.4.2 | 5.0.0, 2.4.2 |
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