# CVE-2020-36319: Potential sensitive data exposure in applications using Vaadin 15

Source: https://junglewise.ai/threats/cve-2020-36319-potential-sensitive-data-exposure-in-applications-using-vaadin-15  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2021-04-19  
License: CC BY 4.0 with a link back

CVE-2020-36319 · Severity: low · CVSS 3.1 · Published 2021-04-19

Potential sensitive data exposure in applications using Vaadin 15

Technologies: [com.vaadin:flow-server (Maven)](https://junglewise.ai/threats/technologies/com-vaadin-flow-server). Vendors: [Maven](https://junglewise.ai/threats/vendors/maven).

## Quick answers

**Is CVE-2020-36319 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2020-36319 being exploited in the wild.

**How severe is CVE-2020-36319?** Low severity, with a CVSS score of 3.1, published 19 April 2021.

**Which products and versions are affected?** com.vaadin:flow-server (Maven) ECOSYSTEM:introduced=3.0.0,fixed=3.0.6.

**Is there a fix for CVE-2020-36319?** Yes. com.vaadin:flow-server (Maven): upgrade to 3.0.6 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected by CVE-2020-36319?** Check whether you run com.vaadin:flow-server (Maven) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- com.vaadin:flow-server (Maven): upgrade to 3.0.6 or later

  ```sh
  # set com.vaadin:flow-server to 3.0.6 in your pom.xml or build.gradle
  ```


## Affected products

- com.vaadin:flow-server (Maven) ECOSYSTEM:introduced=3.0.0,fixed=3.0.6

## Identifiers

- CVE-2020-36319
- GHSA-rjww-2x8v-m9v9

## Related threats

- [Vaadin Vulnerable to Authentication Bypass When Accessing the /VAADIN Endpoint Without a Trailing Slash](https://junglewise.ai/threats/cve-2026-2742-vaadin-vulnerable-to-authentication-bypass-when-accessing-the)
- [Vaadin vulnerable to possible information disclosure in non visible components.](https://junglewise.ai/threats/cve-2023-25499-vaadin-vulnerable-to-possible-information-disclosure-in-non)
- [Vaadin vulnerable to possible information disclosure of class and method names in RPC response](https://junglewise.ai/threats/cve-2023-25500-vaadin-vulnerable-to-possible-information-disclosure-of-class-and)
- [Possible route enumeration in production mode via RouteNotFoundError view in Vaadin 10, 11-14, and 15-19](https://junglewise.ai/threats/possible-route-enumeration-in-production-mode-via-routenotfounderror-4209bf91)
- [Reflected cross-site scripting in development mode handler in Vaadin](https://junglewise.ai/threats/reflected-cross-site-scripting-in-development-mode-handler-in-vaadin-41b16ed3)