CVE-2021-31412: Possible route enumeration in production mode via RouteNotFoundError view in Vaadin 10, 11-14, and 15-19
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.
Affected Software
Remediation
Patch Available
Event History
Frequently Asked Questions
What is CVE-2021-31412?
CVE-2021-31412 is a vulnerability that involves improper sanitization of a path in the default RouteNotFoundError view in com.vaadin:flow-server versions.
What is the severity of CVE-2021-31412?
CVE-2021-31412 has a severity level of medium with a CVSS score of 5.3.
Which software versions are affected by CVE-2021-31412?
CVE-2021-31412 affects 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).
How can CVE-2021-31412 be fixed?
To fix CVE-2021-31412, ensure that you are using a patched version of com.vaadin:flow-server, such as versions newer than 1.0.14, 2.0.0, 6.0.9, and so on.
Where can I find more information about CVE-2021-31412?
You can find more information about CVE-2021-31412 in the following references: [GitHub Pull Request](https://github.com/vaadin/flow/pull/11107) and [Vaadin Security Page](https://vaadin.com/security/cve-2021-31412).