How severe is CVE-2025-9467?

This vulnerability has a CVSS score of (Unknown severity).

How difficult is it to exploit CVE-2025-9467?

Exploit difficulty: HARD. Estimated time to exploit: > 4 hours. Required skills: Advanced security expertise.

CVE-2025-9467 - YourPassGen

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

Related CVE by CWE

No related CWE found.

Top CVE for Vendor

No vendor taxonomy on this entry.

Recently Exploited Similar Vulnerabilities

No recent KEV-listed items for this vendor/product.

How to fix CVE-2025-9467

CVE-2025-9467 is a unknown severity vulnerability affecting the affected product.

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 […]

Exploit Difficulty: HARD
⏱️ Time to exploit: > 4 hours
🛠️ Required skills: Advanced security expertise
💰 Public exploits: Rare or not public

How to Fix:

1 Identify affected systems

- Check if you're running the affected product

2 Immediate actions

- Update to the latest patched version
- If patching is not immediately possible: restrict network exposure, apply least-privilege access

3 Verification

- Test the fix in a staging environment first
- Review logs for signs of exploitation
- Monitor for IOCs (Indicators of Compromise)

4 Long-term prevention

- Enable automatic security updates
- Set up vulnerability monitoring
- Review and harden security configurations

Full CVE details

Exploit Difficulty Assessment

HARD

⏱️ Time to Exploit: > 4 hours

🛠️ Skills Required: Advanced security expertise

💰 Public Exploits: Rare or not public

Vulnerability Timeline

Sep 04, 2025

Vulnerability Published

CVE details first published to NVD database

Nov 12, 2025

Imported to Database

Added to this CVE tracking system

Detection Rules & IOCs

No specific detection rules generated for this vulnerability type.

No vendor/product data available.

No related CVEs found (no vendor/product data available).