CVE-2025-9467
When the Vaadin Upload's start listener is used to validate metadata about an incoming upload, it is possible to bypass the upload validation.
Overview
CVE-2025-9467 is a known-severity vulnerability. It was published on September 4, 2025.
Technical 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:v
Remediation
Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
References
How CyberStrike helps
Reason, not just scan
It reasons through your app's logic the way a human pentester would, so it finds flaws signature scanners miss.
Learn moreVerified findings
Every finding is proven exploitable before you see it, which cuts the false positives that bury real risk.
Learn moreAI-driven DAST and SAST
Probe running apps and read source from one engine, so issues are caught before and after they ship.
Learn moreOpen source
Read exactly how it tests and what it reports. CyberStrike is open source and in early access.
View the repo
Frequently asked questions
What is CVE-2025-9467?
CVE-2025-9467 is a known-severity vulnerability. It was published on September 4, 2025.
How severe is CVE-2025-9467?
CVSS score information is not yet available for this vulnerability. Check back as the CVE record is updated by NVD analysts.
How do I fix or remediate CVE-2025-9467?
Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2025-9467?
CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2025-9467 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.