CVE-2025-9467

Possibility to bypass file upload validation on the server-side

5.3 MediumFix available

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

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: Low
User interaction: None

What an attacker can affect

Confidentiality: None
Integrity: Low
Availability: Low

Exploit likelihood

0.39%Up 0.4 points since Sep 4, 2025

What each source reports

CVE List Score used 5.3

Possibility to bypass file upload validation on the server-side

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.

Record: CVE-2025-9467
CVSS 4.0: 5.3 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/S:N/AU:N/R:U/V:D/RE:L/U:Green
Weakness: CWE-20
Updated: 2026-11-02

EUVDEUVD-2025-26701 5.3

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.

Record: EUVD-2025-26701
CVSS 4.0: 5.3 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/S:N/AU:N/R:U/V:D/RE:L/U:Green
Updated: 2026-11-02

GitHub AdvisoriesGHSA-9gfh-4fwj-w3rj 5.3

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

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.

Record: GHSA-9gfh-4fwj-w3rj
CVSS 4.0: 5.3 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/S:N/AU:N/R:U/V:D/RE:L/U:Green
Weakness: CWE-20, CWE-434
Updated: 2026-11-02

NVD 5.3

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.

Record: CVE-2025-9467
CVSS 4.0: 5.3 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:N/AU:N/R:U/V:D/RE:L/U:Green
Weakness: CWE-20
Updated: 2026-11-02

OSV 5.3

Possibility to bypass file upload validation on the server-side

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.

Record: CVE-2025-9467
CVSS 4.0: 5.3 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/S:N/AU:N/R:U/V:D/RE:L/U:Green
Weakness: CWE-20
Updated: 2026-11-02

OSVGHSA-9gfh-4fwj-w3rj 5.3

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

Description

Record: GHSA-9gfh-4fwj-w3rj
CVSS 4.0: 5.3 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/S:N/AU:N/R:U/V:D/RE:L/U:Green
Weakness: CWE-20, CWE-434
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`com.vaadin:vaadin-server` Maven	7.0.0 to 7.7.47	7.7.48
`com.vaadin:vaadin-server` Maven	8.0.0 to 8.28.1	8.28.2
`com.vaadin:vaadin-server` Maven	7.0.0 up to 7.7.48, plus listed versions 7.0.17.0.27.0.37.0.47.0.5 Show 45 moreShow less 7.0.67.0.77.1.07.1.0.beta17.1.17.1.107.1.117.1.127.1.137.1.147.1.157.1.27.1.37.1.47.1.57.1.67.1.77.1.87.1.97.2.07.2.0.beta17.2.17.2.27.2.37.2.47.2.57.2.67.2.77.3.07.3.0.alpha17.3.0.alpha27.3.0.alpha37.3.0.beta17.3.0.rc17.3.17.3.107.3.27.3.37.3.47.3.57.3.67.3.77.3.87.3.97.4.0	7.7.48
`com.vaadin:vaadin-server` Maven	8.0.0 up to 8.28.2, plus listed versions 8.0.18.0.28.0.38.0.48.0.5 Show 45 moreShow less 8.0.68.0.78.1.08.1.18.1.28.1.38.1.48.1.58.1.68.1.78.1.88.10.08.10.18.10.28.10.38.10.48.10.58.11.08.11.18.11.28.11.38.12.08.12.18.12.28.12.38.12.48.13.08.13.18.13.28.13.38.14.08.14.18.14.28.14.38.14.48.14.58.15.08.15.18.15.28.16.08.16.18.17.08.18.08.19.08.2.0	8.28.2

History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2025-9467 is a medium vulnerability (CVSS 5.3) in Vaadin, published September 4, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.39%, the 33rd percentile. Fixed in com.vaadin:vaadin-server 7.7.48.

References

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This page doesn't list everything

Left out here: 154 versions. The JSON record has them.