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GHSA-p7jq-v8jp-j424

Timing side channel vulnerability in endpoint request handler in Vaadin 15-19

Source: GitHub Advisory Database (reviewed) Moderate CVE-2021-31406

Packages

EcosystemPackageAffectedFixed in
Maven com.vaadin:flow-server >= 3.0.0, < 5.0.4 5.0.4
Maven com.vaadin:flow-server >= 6.0.0, < 6.0.1 6.0.1

Details

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

Non-constant-time comparison of CSRF tokens in endpoint request handler in `com.vaadin:flow-server` versions 3.0.0 through 5.0.3 (Vaadin 15.0.0 through 18.0.6), and com.vaadin:fusion-endpoint version 6.0.0 (Vaadin 19.0.0) allows attacker to guess a security token for Fusion endpoints via timing attack. - https://vaadin.com/security/cve-2021-31406

References

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