Insecure temporary directory usage in frontend build functionality of com.vaadin:flow-server versions 2.0.9 through 2.5.2 (Vaadin 14.0.3 through Vaadin 14.5.2), 3.0 prior to 6.0 (Vaadin 15 prior to 19), and 6.0.0 through 6.0.5 (Vaadin 19.0.0 through 19.0.4) allows local users to inject malicious code into frontend resources during application rebuilds.
The product creates a temporary file in a directory whose permissions allow unintended actors to determine the file’s existence or otherwise access that file.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Flow | Vaadin | 2.0.9 (including) | 2.5.3 (excluding) |
| Flow | Vaadin | 3.0.0 (including) | 5.0.0 (including) |
| Flow | Vaadin | 6.0.0 (including) | 6.0.6 (including) |
| Vaadin | Vaadin | 14.0.3 (including) | 14.5.3 (excluding) |
| Vaadin | Vaadin | 15.0.0 (including) | 19.0.5 (excluding) |