CVE-2021-31412

Possible route enumeration in production mode via RouteNotFoundError view in Vaadin 10, 11-14, and 15-19

Description

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.

Categories

5.3
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.94% Top 25%
Vendor Advisory vaadin.com
Affected: Vaadin Vaadin
Affected: Vaadin flow-server
Published at:
Updated at:

References

Link Tags
https://vaadin.com/security/cve-2021-31412 vendor advisory
https://github.com/vaadin/flow/pull/11107 third party advisory patch

Frequently Asked Questions

What is the severity of CVE-2021-31412?
CVE-2021-31412 has been scored as a medium severity vulnerability.
How to fix CVE-2021-31412?
To fix CVE-2021-31412, 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-2021-31412 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-31412 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-2021-31412?
CVE-2021-31412 affects Vaadin Vaadin, Vaadin flow-server.
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