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TI-2021-11540 Aliases CVE-2021-31408GHSA-mr8h-j9cv-4m8h

Server session is not invalidated when logout() helper method of Authentication module is used in Vaadin 18-19

Priority LOW 31CWE-613Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
High · High · None
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-613.

Summary

Authentication.logout() helper in com.vaadin:flow-client versions 5.0.0 prior to 6.0.0 (Vaadin 18), and 6.0.0 through 6.0.4 (Vaadin 19.0.0 through 19.0.3) uses incorrect HTTP method, which, in combination with Spring Security CSRF protection, allows local attackers to access Fusion endpoints after the user attempted to log out.

Why it matters now

EPSS 0.00322 25th percentileScored 2026-11-07
Fix Fixed com.vaadin:vaadin-bom (Maven): 19.0.4

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
VaadinVaadin18.0.0 and later—No fix listedCNA
Vaadinflow-client5.0.0 and later—No fix listedCNA
—com.vaadin:vaadin-bom (Maven)18.0.0 to before 19.0.419.0.4Patch availableGHSA-mr8h-j9cv-4m8h
  • Vaadin VendorVaadin Affected 18.0.0 and later Fixed in — No fix listed CNA
  • flow-client VendorVaadin Affected 5.0.0 and later Fixed in — No fix listed CNA
  • com.vaadin:vaadin-bom (Maven) Vendor— Affected 18.0.0 to before 19.0.4 Fixed in 19.0.4 Patch available GHSA-mr8h-j9cv-4m8h

CPE configurations NVD · 3

CPEVersionsRoleVendor
cpe:2.3:a:vaadin:flow:*:*:*:*:*:*:*:*5.0.0 to before 6.0.0; 6.0.0 to before 6.0.5VulnerableVaadin
cpe:2.3:a:vaadin:vaadin:*:*:*:*:*:*:*:*19.0.0 to before 19.0.4VulnerableVaadin
cpe:2.3:a:vaadin:vaadin:18.0.0:-:*:*:*:*:*:*18.0.0VulnerableVaadin
  • cpe:2.3:a:vaadin:flow:*:*:*:*:*:*:*:* Versions 5.0.0 to before 6.0.0; 6.0.0 to before 6.0.5 Vulnerable ·Vaadin
  • cpe:2.3:a:vaadin:vaadin:*:*:*:*:*:*:*:* Versions 19.0.0 to before 19.0.4 Vulnerable ·Vaadin
  • cpe:2.3:a:vaadin:vaadin:18.0.0:-:*:*:*:*:*:* Versions 18.0.0 Vulnerable ·Vaadin

Remediation

  • Fix · GHSA-mr8h-j9cv-4m8h com.vaadin:vaadin-bom (Maven) Fixed in 19.0.4 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-31408
  2. 2026-10-03 Alias added: GHSA-mr8h-j9cv-4m8h

References

Patch 1

Advisory 2

Other 1

  • TI-2021-11539 Server classes and resources exposure in OSGi applications using Vaadin 12-14 and 19 CVSS 3.1HIGH 8.6
  • TI-2021-11537 Regular expression denial of service (ReDoS) in EmailField component in Vaadin 14 and 15-17 CVSS 3.1HIGH 7.5
  • TI-2020-18604 Directory traversal in development mode handler in Vaadin 14 and 15-17 CVSS 3.1HIGH 7.5
  • TI-2021-11543 Insecure temporary directory usage in frontend build functionality of Vaadin 14 and 15-19 CVSS 3.1HIGH 7.8
  • TI-2020-18602 Potential sensitive data exposure in applications using Vaadin 15 CVSS 3.1MEDIUM 6.5
  • TI-2019-15167 Reflected cross-site scripting in default RouteNotFoundError view in Vaadin 10 and 11-13 CVSS 3.1MEDIUM 6.1
See all 10 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences