CVE-2021-31409

Server session is not invalidated when logout() helper method of Authentication module is used in Vaadin 18-19

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.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.72% Top 30%
Vendor Advisory vaadin.com
Affected: Vaadin Vaadin
Affected: Vaadin vaadin-compatibility-server
Published at:
Updated at:

References

Link Tags
https://vaadin.com/security/cve-2021-31409 vendor advisory
https://github.com/vaadin/framework/issues/12240 third party advisory patch
https://github.com/vaadin/framework/pull/12241 third party advisory patch

Frequently Asked Questions

What is the severity of CVE-2021-31409?
CVE-2021-31409 has been scored as a high severity vulnerability.
How to fix CVE-2021-31409?
To fix CVE-2021-31409, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-31409 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-31409 is being actively exploited. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-31409?
CVE-2021-31409 affects Vaadin Vaadin, Vaadin vaadin-compatibility-server.
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