CVE-2021-31404: Timing side channel vulnerability in UIDL request handler in Vaadin 10, 11-14, and 15-18

CVE-2021-31404 · Severity: low · CVSS 3.1 · Published 2021-04-19

Timing side channel vulnerability in UIDL request handler in Vaadin 10, 11-14, and 15-18

Technologies: com.vaadin:flow-server (Maven). Vendors: Maven.

Quick answers

Is CVE-2021-31404 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2021-31404 being exploited in the wild.
How severe is CVE-2021-31404?
Low severity, with a CVSS score of 3.1, published 19 April 2021.
Which products and versions are affected?
com.vaadin:flow-server (Maven) ECOSYSTEM:introduced=1.0.0,fixed=1.0.14.
Is there a fix for CVE-2021-31404?
Yes. com.vaadin:flow-server (Maven): upgrade to 1.0.14 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected by CVE-2021-31404?
Check whether you run com.vaadin:flow-server (Maven) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • com.vaadin:flow-server (Maven): upgrade to 1.0.14 or later
    # set com.vaadin:flow-server to 1.0.14 in your pom.xml or build.gradle

Affected products

  • com.vaadin:flow-server (Maven) ECOSYSTEM:introduced=1.0.0,fixed=1.0.14

Identifiers

  • CVE-2021-31404
  • GHSA-xwg3-qrcg-w9x6

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