CVSS 3.1
7.1 highCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:NCVE-2021-31408
High (7.1) in vaadin. EPSS 0.3% chance of exploitation in the next 30 days. Fixed in com.vaadin:vaadin-bom 19.0.4.
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.
Severity
- EPSS
- 0.3% chance of exploitation in the next 30 days; higher than 25% of CVEs (scores of 2026-10-31)
- CWE
- CWE-613
- Published
- Modified
- Record from
- the NVD, synced
Affected
- vaadin:flow
- vaadin:vaadin
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-mr8h-j9cv-4m8h | Maven | com.vaadin:vaadin-bom | >=18.0.0 <19.0.4 | 19.0.4 |