Your RSA-2048 keys break in 2030. Find every one of them before attackers do.
☕ Maven
Not in CISA KEV

GHSA-94g8-xv23-7656 — vaadin-upload-flow

Fix: vaadin/flow-components#7616

GHSA-94g8-xv23-7656 is a security vulnerability in com.vaadin:vaadin-upload-flow. A fix is available for com.vaadin:vaadin-upload-flow — see the affected versions and patch details below.

Vaadin Flow Components possible file bypass via upload validation on the server-side

Published
Sep 4, 2025
Updated
Sep 4, 2025
Affected
3 pkgs
Patched
3 / 3
Exploits
None indexed
Exploitation data as of Sep 4, 2025 · OSV.dev, FIRST.org (EPSS)

Real-World Exposure

3 pkgs affected
☕com.vaadin:vaadin-upload-flow☕com.vaadin:vaadin-upload-flow☕com.vaadin:vaadin-upload-flow

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Maven packages — download data is not available via public APIs for these ecosystems.

Description

Description

When the Vaadin Upload's start listener is used to validate metadata about an incoming upload, it is possible to bypass the upload validation. Users of affected versions should apply the upgrade to a more recent Vaadin version.

Affected Packages

3 total 3 fixed
EcosystemPackageVulnerable rangeFix
☕Mavencom.vaadin:vaadin-upload-flow≥ 2.0.0&&< 14.13.114.13.1com.vaadin:vaadin-upload-flow:14.13.1
☕Mavencom.vaadin:vaadin-upload-flow≥ 23.0.0&&< 23.6.223.6.2com.vaadin:vaadin-upload-flow:23.6.2
☕Mavencom.vaadin:vaadin-upload-flow≥ 24.0.0&&< 24.7.724.7.7com.vaadin:vaadin-upload-flow:24.7.7

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for com.vaadin:vaadin-upload-flow, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update com.vaadin:vaadin-upload-flow to 14.13.1 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-94g8-xv23-7656 is resolved across your whole dependency graph.

  3. Workarounds

    If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

Frequently Asked Questions

### Description When the Vaadin Upload's start listener is used to validate metadata about an incoming upload, it is possible to bypass the upload validation. Users of affected versions should apply the upgrade to a more recent Vaadin version.
O3 Security · Impact-Aware SCA

Is GHSA-94g8-xv23-7656 in your dependencies?

Find it across Maven, including transitive dependencies.

Scan my dependencies How O3 SCA works
GHSA-94g8-xv23-7656: vaadin-upload-flow | O3 Security