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.
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Java / Kotlin (Maven) | com.vaadin:vaadin-server | >= 7.0.0, < 7.7.48, >= 8.0.0, < 8.28.2 | 7.7.48, 8.28.2 |
References
- https://github.com/vaadin/framework/security/advisories/GHSA-9gfh-4fwj-w3rj
- https://nvd.nist.gov/vuln/detail/CVE-2025-9467
- https://github.com/vaadin/flow-components/pull/7616
- https://github.com/vaadin/flow-components/commit/bfe9e507cdcc5d90a2312c8f0162f798a29ba635
- https://github.com/vaadin/framework
- https://vaadin.com/security/cve-2025-9467
- CVSS vector
CVSS: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)
CWE-20, CWE-434- Platform
- Java / Kotlin (Maven)
- Package
com.vaadin:vaadin-server- Disclosed
- 04.09.2025
- Updated
- 11.10.2026 13:20
Sources and licenses
OSV / GitHub Advisory Database - GHSA-9gfh-4fwj-w3rj - CC BY 4.0
Vulnerability history: com.vaadin:vaadin-server
All published vulnerabilities of this package (Java / Kotlin (Maven)), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 7
- First → latest
- 04.2021 01.2026
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- High 1
- Medium 6
Disclosures per year
- 2021: 5
- 2022: 0
- 2023: 0
- 2024: 0
- 2025: 1
- 2026: 1
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