Home/CVE/Unsafe validation RegEx in EmailField component in com.vaadin:vaadin-text-field-flow versions 2.0.4 through 2.3.2 (Vaadi
CVE

CVE-2021-31405

Unsafe validation RegEx in EmailField component in com.vaadin:vaadin-text-field-flow versions 2.0.4 through 2.3.2 (Vaadi

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.

HIGH · CVSS 7.5 EPSS 0.00468
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules3 YARA rules0
⬡

Weakness Classification

CWE-400Uncontrolled Resource Consumption
CWE-400Uncontrolled Resource Consumption
▤

Affected Products & Versions

4
vaadin flow>= 2.0.4 and < 2.3.3
vaadin flow>= 3.0.0 and < 4.0.3
vaadin>= 14.0.6 and < 14.4.4
vaadin>= 15.0.0 and < 17.0.11
▤

Affected Packages

1
Language-ecosystem packages (from OSV) tied to this CVE, with the version that fixes it - the dependency-level detail NVD doesn’t carry.
Maven com.vaadin:vaadin-bom HIGH fixed in 14.4.4
◈

Sigma Hunt Rules

3
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
producthighAWS VPC Flow Logs Deleted
productmediumApplication Using Device Code Authentication Flow
productmediumApplications That Are Using ROPC Authentication Flow
▣

Scoring & Timeline

7.5
HIGH · CVSS v3.1 · security@vaadin.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD23 Apr 2021 · 04:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
🔗

References & Sources

2
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://github.com/vaadin/flow-components/pull/442PatchThird Party Advisory
https://vaadin.com/security/cve-2021-31405Vendor Advisory
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