What’s Vulnerable › Vulnerabilities

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

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.0% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-04-23 · updated 2026-06-17
• Weakness: CWE-200

Description

Insecure configuration of default ObjectMapper in com.vaadin:flow-server versions 3.0.0 through 3.0.5 (Vaadin 15.0.0 through 15.0.4) may expose sensitive data if the application also uses e.g. @RestController

Affected products

• vaadin flow: from 3.0.0 before 3.0.6 — fixed in 3.0.6
• Vaadin: from 15.0.0 before 15.0.5 — fixed in 15.0.5

How to fix

Upgrade to a fixed version: vaadin flow 3.0.6; Vaadin 15.0.5. Check the vendor advisory for mitigations.

References

• https://github.com/vaadin/flow/pull/8016
• https://github.com/vaadin/flow/pull/8051
• https://vaadin.com/security/cve-2020-36319
• https://github.com/vaadin/flow/pull/8016
• https://github.com/vaadin/flow/pull/8051
• https://vaadin.com/security/cve-2020-36319

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