GHSA-8vfw-v2jv-9hwc: com.vaadin:flow-server

Reflected cross-site scripting in development mode handler in Vaadin

CVSS 2.5 Low

Published by the GitHub Advisory Database at 28 Jun 2021, 16:52 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

Package	Ecosystem	Affected	Fixed in
com.vaadin:flow-server	Maven	>=2.0.0, <2.6.2 \|\| >=3.0.0, <6.0.10	2.6.2, 6.0.10

Identifiers

GHSA-8vfw-v2jv-9hwc

Weakness (CWE)

CWE-172

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
2.5	Low	3.1	CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N	GitHub Advisory Database

CISA KEV Not listed.
EPSS No score.

Timeline

31 Oct 2026, 15:12 UTC First seen by agentprime
31 Oct 2026, 15:12 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.