CVE-2021-31412

MEDIUM
Published Jun 24, 20215y ago · Modified Jun 17, 20262w ago
5.3 CVSS 3.1
Medium
Find Similar
Published Jun 24, 2021 5y ago
Last Modified Jun 17, 2026 2w ago

Description

Improper sanitization of path in default RouteNotFoundError view in com.vaadin:flow-server versions 1.0.0 through 1.0.14 (Vaadin 10.0.0 through 10.0.18), 1.1.0 prior to 2.0.0 (Vaadin 11 prior to 14), 2.0.0 through 2.6.1 (Vaadin 14.0.0 through 14.6.1), and 3.0.0 through 6.0.9 (Vaadin 15.0.0 through 19.0.8) allows network attacker to enumerate all available routes via crafted HTTP request when application is running in production mode and no custom handler for NotFoundException is provided.

CVSS Details

Base Score
5.3
Exploitability
3.9
Impact
1.4
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Low
Integrity None
Availability None

Threat Intelligence

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

Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 2

CWE-1295
CWE-20 Improper Input Validation Validation

Affected Products 10

VendorProductVersionRange
vaadinflow*≥1.0.0  –  ≤1.0.14
vaadinflow*≥1.1.0  –  ≤1.4.0
vaadinflow*≥2.0.0  –  ≤2.6.1
vaadinflow*≥3.0.0  –  ≤5.0.0
vaadinflow*≥6.0.0  –  ≤6.0.9
vaadinvaadin*≥10.0.0  –  ≤10.0.18
vaadinvaadin*≥11.0.0  –  ≤13.0.0
vaadinvaadin*≥14.0.0  –  ≤14.6.1
vaadinvaadin*≥15.0.0  –  ≤18.0.0
vaadinvaadin*≥19.0.0  –  ≤19.0.8

References 2

  • github.com https://github.com/vaadin/flow/pull/11107
    PatchThird Party Advisory
  • vaadin.com https://vaadin.com/security/cve-2021-31412
    Vendor Advisory

Remediation

  • github.com https://github.com/vaadin/flow/pull/11107
    PatchThird Party Advisory