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GHSA-49r2-73m6-pp8f

Directory traversal in development mode handler in Vaadin 14 and 15-17

Source: GitHub Advisory Database (reviewed) Moderate CVE-2020-36321

Packages

EcosystemPackageAffectedFixed in
Maven com.vaadin:flow-server >= 3.0.0, < 5.0.0 5.0.0
Maven com.vaadin:flow-server >= 2.0.0, < 2.4.2 2.4.2

Details

As written in the advisory (Markdown source, shown as plain text).

Improper URL validation in development mode handler in `com.vaadin:flow-server` versions 2.0.0 through 2.4.1 (Vaadin 14.0.0 through 14.4.2), and 3.0 prior to 5.0 (Vaadin 15 prior to 18) allows attacker to request arbitrary files stored outside of intended frontend resources folder. - https://vaadin.com/security/cve-2020-36321

References

External links from the advisory. They lead to third-party sites.