CVE-2021-31409

HIGH
Published May 6, 20215y ago · Modified Jun 17, 20262w ago
7.5 CVSS 3.1
High
Find Similar
Published May 6, 2021 5y ago
Last Modified Jun 17, 2026 2w ago

Description

Unsafe validation RegEx in EmailValidator component in com.vaadin:vaadin-compatibility-server versions 8.0.0 through 8.12.4 (Vaadin versions 8.0.0 through 8.12.4) allows attackers to cause uncontrolled resource consumption by submitting malicious email addresses.

CVSS Details

Base Score
7.5
Exploitability
3.9
Impact
3.6
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

No active exploitation signals — not in CISA KEV and no EPSS score yet.

Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-400 Uncontrolled Resource Consumption Resource Mgmt

Affected Products 1

VendorProductVersionRange
vaadinvaadin*≥8.0.0  –  ≤8.12.4

References 3

  • github.com https://github.com/vaadin/framework/issues/12240
    PatchThird Party Advisory
  • github.com https://github.com/vaadin/framework/pull/12241
    PatchThird Party Advisory
  • vaadin.com https://vaadin.com/security/cve-2021-31409
    Vendor Advisory

Remediation

  • github.com https://github.com/vaadin/framework/issues/12240
    PatchThird Party Advisory
  • github.com https://github.com/vaadin/framework/pull/12241
    PatchThird Party Advisory