What is CVE-2021-31412?

CVE-2021-31412 is a medium-severity vulnerability in Vaadin Flow, classified under CWE-1295. CVSS score: 5.3/10. Published 2021-06-24.

How severe is CVE-2021-31412?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Is CVE-2021-31412 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Improper input validation in Vaadin Flow

CVE-2021-31412

Improper sanitization of path in default RouteNotFoundError view in com.vaadin:flow-server versions 1.0.0 through 1.0.14 (Vaadin 10.0.0 through 10.0.18), 1.1.0 prior to 2.0.0 (Vaadin 11 prior to 14), 2.0.0 through 2.6.1 (Vaadin 14.0.0 through 14.6.1), and 3.0.0 through 6.0.9 (Vaadin 15.0.0 through 19.0.8) allows network attacker to enumerate all available routes via crafted HTTP request when application is running in production mode and no custom handler for NotFoundException is provided.

EPSS: 0.013 (68.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

Affected products

Vaadin Flow
Vaadin Flow-server — versions 1.0.0, unspecified, 1.1.0
Vaadin — versions 10.0.0, unspecified, 11.0.0

Weakness classification (CWE)

Public proof-of-concept exploits

muneebaashiq/MBProjects

References

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

Frequently asked questions

What is CVE-2021-31412?: CVE-2021-31412 is a medium-severity vulnerability in Vaadin Flow, classified under CWE-1295. CVSS score: 5.3/10. Published 2021-06-24.
How severe is CVE-2021-31412?: Medium severity. CVSS v3 base score is 5.3 out of 10.
Is CVE-2021-31412 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.