Resource exhaustion in Vaadin

CVE-2020-36320

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.

Vulnerability class: DoS (Denial of Service)

EPSS: 0.020 (78.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2020-36320?
CVE-2020-36320 is a high-severity vulnerability in Vaadin, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2021-04-23.
How severe is CVE-2020-36320?
High severity. CVSS v3 base score is 7.5 out of 10.