title: Insecure temporary directory usage in frontend build functionality of Vaadin 14 and 15-19
description: 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.
problem types: CWE-379 Creation of Temporary File in Directory with Incorrect Permissions
affected:
{
product: Vaadin
vendor: Vaadin
versions:
changes: [at: 15.0.0, status: affected], lessThan: *, status: affected, version: 14.0.3, versionType: custom
}
{
product: flow-server
vendor: Vaadin
versions:
changes: [at: 3.0.0, status: affected], lessThan: *, status: affected, version: 2.0.9, versionType: custom
}
metrics:
cvssV3_1: [
attackComplexity: HIGH
attackVector: LOCAL
availabilityImpact: NONE
baseScore: 6.3
baseSeverity: MEDIUM
confidentialityImpact: HIGH
integrityImpact: HIGH
privilegesRequired: LOW
scope: UNCHANGED
userInteraction: NONE
vectorString: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
version: 3.1
]