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CVE-2021-31405

Affected software2 products, listed below
Severity7.5 High CVSS 3.1 3 scores
Fixed in14.4.4, 17.0.11
WeaknessUncontrolled resource consumption (CWE-400)
Published23 Apr 2021
Updated17 Jun 2026

Description

Unsafe validation RegEx in EmailField component in com.vaadin:vaadin-text-field-flow versions 2.0.4 through 2.3.2 (Vaadin 14.0.6 through 14.4.3), and 3.0.0 through 4.0.2 (Vaadin 15.0.0 through 17.0.10) allows attackers to cause uncontrolled resource consumption by submitting malicious email addresses.

Exploitation status

No public exploit

No exploit has been reported in the sources we check. Published 5 years ago.

  • CISA KEV not listed
  • VulnCheck KEV not listed
  • CISA Vulnrichment no assessment published
  • Indexed PoC none indexed
  • EPSS 1.1% chance in 30 days

Waratek protection

No exploit published

Within Waratek scope. In the sources we check, nobody has published exploit code for this CVE or reported it being exploited.

A public code fix exists: vaadin/flow-components #442.

  • Protection none
  • Action unverified
  • Review automated Upstream data
  • Record active
Decided by Exploit code for this candidate, published in a reviewed catalogue or a GitHub repository with 5 or more stars, or in use per CISA or VulnCheck; not only a CISA verdict, a forecast, or nothing at all
Finding This CVE is not listed in CISA KEV or VulnCheck KEV, CISA Vulnrichment records no active exploitation, no reviewed exploit catalogue carries an entry for it, and no GitHub PoC repository for it has 5 or more stars. Nobody has published exploit code worth tracing, so it is not a candidate for a rule ahead of the ones where somebody has; an upstream fix path does exist, so the remediation half of the candidacy still holds. This is a statement about what has been published, not about whether the defect is reachable or serious.
Candidate fix https://github.com/vaadin/flow-components/pull/442 : a pull request: the change under review

CVSS

7.5 HIGH v3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H 3 metrics

We show the highest score from the newest CVSS version. Scores from different versions can't be compared, and the first score listed is sometimes a 0.0 placeholder.

VersionScoreBandVectorAssignerType
CVSS 3.1 7.5 HIGH CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H security@vaadin.com Secondary published
CVSS 3.1 7.5 HIGH CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H NVD Primary
CVSS 2.0 5.0 none AV:N/AC:L/Au:N/C:N/I:N/A:P NVD Primary

Affected software and releases

Maven packages

Affected and fixed versions, from OSV.dev
PackageIntroducedFixedLast affected
com.vaadin:vaadin-bom 14.0.6 14.4.4 unbounded
com.vaadin:vaadin-bom 15.0.0 17.0.11 unbounded

Products and versions

3 products, 6 version entries
SourceVendorProductSchemeAffected versions
osv com.vaadin vaadin-bom generic ≥ 14.0.6 and < 14.4.4 · ≥ 15.0.0 and < 17.0.11
nvd vaadin flow generic ≥ 2.0.4 and < 2.3.3 · ≥ 3.0.0 and < 4.0.3
nvd vaadin vaadin generic ≥ 14.0.6 and < 14.4.4 · ≥ 15.0.0 and < 17.0.11

References

URLTags
https://github.com/vaadin/flow-components/pull/442 pr
https://github.com/vaadin/platform/security/advisories/GHSA-2wqp-jmcc-mc77 WEB
https://vaadin.com/security/cve-2021-31405 WEB

Timeline

Published2021-04-23By the CVE Program.
NVD record modified2026-06-17NVD's own last-modified date for this record.