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Status published
Medium
CVE-2021-31408
Server session is not invalidated when logout() helper method of Authentication module is used in Vaadin 18-19
Vulnerability Description
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.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
No credits recorded in the NVD database.
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Affected Vendor
Vaadin
View all reports →Affected Software
Vaadin, flow-client
Vulnerable Versions:
18.0.0, 5.0.0
Timeline
Official Publish:
April 23rd, 2021
Last Modified:
September 17th, 2024
Added to House:
July 21st, 2026
CVSS Vectors
V3:
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N