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CVE-2025-9467

Possibility to bypass file upload validation on the server-side

MEDIUM
5.3
CVSS Score
Published: September 4, 2025 at 06:15 AM UTC
Updated: October 18, 2026 at 09:10 PM UTC
3 products affected across 1 vendorVaadinFrameworkVaadin Upload Flow

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Severity
MEDIUM5.3
Exploit prediction
EPSS 0.4%
SSVC
No known exploit

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 following mitigation or upgrade. Releases that have fixed this issue include: Product version Vaadin 7.0.0 - 7.7.47 Vaadin 8.0.0 - 8.28.1 Vaadin 14.0.0 - 14.13.0 Vaadin 23.0.0 - 23.6.1 Vaadin 24.0.0 - 24.7.6 Mitigation Upgrade to 7.7.48 Upgrade to 8.28.2 Upgrade to 14.13.1 Upgrade to 23.6.2 Upgrade to 24.7.7 or newer Please note that Vaadin versions 10-13 and 15-22 are no longer supported and you should update either to the latest 14, 23, 24 version. Artifacts     Maven coordinatesVulnerable versionsFixed versioncom.vaadin:vaadin-server 7.0.0 - 7.7.47 ≥7.7.48 com.vaadin:vaadin-server 8.0.0 - 8.28.1 ≥8.28.2 com.vaadin:vaadin 14.0.0 - 14.13.0 ≥14.13.1 com.vaadin:vaadin23.0.0 - 23.6.1 ≥23.6.2 com.vaadin:vaadin24.0.0 - 24.7.6 ≥24.7.7com.vaadin:vaadin-upload-flow 2.0.0 - 14.13.0 ≥14.13.1 com.vaadin:vaadin-upload-flow 23.0.0 - 23.6.1 ≥23.6.2 com.vaadin:vaadin-upload-flow 24.0.0 - 24.7.6 ≥24.7.7

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Framework· Vaadinmaven
90%
7.0.0 ≤ v ≤ 7.7.478.0.0 ≤ v ≤ 8.28.17.0.08.0.0
Vaadin· Vaadinmaven
90%
14.0.0 ≤ v ≤ 14.13.023.0.0 ≤ v ≤ 23.6.124.0.0 ≤ v ≤ 24.7.614.0.023.0.024.0.0
Vaadin Upload Flow· Vaadinmaven
90%
2.0.0 ≤ v ≤ 14.13.023.0.0 ≤ v ≤ 23.6.124.0.0 ≤ v ≤ 24.7.62.0.023.0.024.0.0

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

Source: [email protected]
https://vaadin.com/security/cve-2025-9467

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.3MEDIUMVaadin
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-20

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