CVE-2020-36320

PoC —

CVSS 3.1

7.5 high

EPSS

2%p79

Published

Apr 23, 2021 (Apr 23, 2021)

Modified

Jun 17, 2026

Description

Unsafe validation RegEx in EmailValidator class in com.vaadin:vaadin-server versions 7.0.0 through 7.7.21 (Vaadin 7.0.0 through 7.7.21) allows attackers to cause uncontrolled resource consumption by submitting malicious email addresses.

Vendors: vaadin
Products: vaadin
Weakness: CWE-400
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

NVD CVE.org GitHub PoCs EPSS (2.0%)

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