CVE-2021-31409
Regular expression Denial of Service (ReDoS) in EmailValidator class in V7 compatibility module in Vaadin 8
7.5
HIGH
CVSS 3.1
EPSS 0.72%
Description
Unsafe validation RegEx in `EmailValidator` component in `com.vaadin:vaadin-compatibility-server` versions 8.0.0 through 8.12.4 (Vaadin versions 8.0.0 through 8.12.4) allows attackers to cause uncontrolled resource consumption by submitting malicious email addresses.
How to fix CVE-2021-31409
To remediate CVE-2021-31409, upgrade the affected package to a fixed version below.
- —upgrade to 8.13.0 or later
Is CVE-2021-31409 being exploited?
Low — EPSS is 0.7%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- >= 8.0.0, < 8.13.0
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |