Reflected cross-site scripting in development mode handler in Vaadin 14, 15-19

Low

fluorumlabs published GHSA-8vfw-v2jv-9hwc

Jun 24, 2021

Package

com.vaadin:flow-server (Maven)

Affected versions

>=2.0.0, <=2.6.1, >=3.0.0, <=6.0.9

Patched versions

2.6.2, 6.0.10

Description

URL encoding error in development mode handler in com.vaadin:flow-server versions 2.0.0 through 2.6.1 (Vaadin 14.0.0 through 14.6.1), 3.0.0 through 6.0.9 (Vaadin 15.0.0 through 19.0.8) allows local user to execute arbitrary JavaScript code by opening crafted URL in browser.

https://vaadin.com/security/cve-2021-33604

Severity

Low

2.5

/ 10

CVSS base metrics

Attack vector

Local

Attack complexity

High

Privileges required

None

User interaction

Required

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

None

CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N