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Medium severity6.3NVD Advisory· Published Apr 23, 2021· Updated Jun 17, 2026

CVE-2021-31408

CVE-2021-31408

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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected packages

Versions sourced from the GitHub Security Advisory.

PackageAffected versionsPatched versions
com.vaadin:vaadin-bomMaven
>= 18.0.0, < 19.0.419.0.4

Affected products

6
  • Vaadin/Flow
    cpe:2.3:a:vaadin:flow:*:*:*:*:*:*:*:*
    Range: >=5.0.0,<6.0.0
  • Vaadin/Vaadin3 versions
    cpe:2.3:a:vaadin:vaadin:*:*:*:*:*:*:*:*+ 2 more
    • cpe:2.3:a:vaadin:vaadin:*:*:*:*:*:*:*:*range: >=19.0.0,<19.0.4
    • cpe:2.3:a:vaadin:vaadin:18.0.0:-:*:*:*:*:*:*
    • (no CPE)range: 18.0.0
  • ghsa-coords
    pkg:maven/com.vaadin/vaadin-bom
    Range: >= 18.0.0, < 19.0.4
  • Vaadin/flow-clientcpe-rescue
    Range: 5.0.0

Patches

Vulnerability mechanics

References

5

News mentions

0

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