What is CVE-2021-31408?

CVE-2021-31408 is a medium-severity vulnerability in Vaadin Flow, classified under Insufficient Session Expiration. CVSS score: 6.3/10. Published 2021-04-23.

How severe is CVE-2021-31408?

Medium severity. CVSS v3 base score is 6.3 out of 10.

Vulnerability in Vaadin Flow

CVE-2021-31408

Authentication.logout() helper in com.vaadin:flow-client versions 5.0.0 prior to 6.0.0 (Vaadin 18), and 6.0.0 through 6.0.4 (Vaadin 19.0.0 through 19.0.3) uses incorrect HTTP method, which, in combination with Spring Security CSRF protecti…

EPSS: 0.003 (24.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N.

Affected products

Vaadin Flow
Vaadin Flow-client — versions 5.0.0
Vaadin — versions 18.0.0

Weakness classification (CWE)

CWE-613 — Insufficient Session Expiration

References

security@vaadin.com (x_refsource_MISC, Vendor Advisory)
security@vaadin.com (Patch, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2021-31408?: CVE-2021-31408 is a medium-severity vulnerability in Vaadin Flow, classified under Insufficient Session Expiration. CVSS score: 6.3/10. Published 2021-04-23.
How severe is CVE-2021-31408?: Medium severity. CVSS v3 base score is 6.3 out of 10.