# Server classes and resources exposure in OSGi applications using Vaadin 12-14 and 19

Advisory record · `GHSA-j9wr-49vq-rm5g`

- **Identifiers:** `GHSA-j9wr-49vq-rm5g`
- **State:** Confirmed
- **Severity:** CVSS 8.6 High
- **Critical:** No
- **Weakness (CWE):** [CWE-402](https://cwe.mitre.org/data/definitions/402.html)
- **Tags:** [CWE-402](https://agentprime.io/advisories/tag/cwe-402.md)
- **Published:** 19 Apr 2021
- **Updated:** 2 Dec 2024
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 19 Apr 2021, 14:46 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Affected packages

- `com.vaadin:vaadin-bom` (Maven): affected `>=12.0.0, <14.4.10 || >=19.0.0, <19.0.1`; fixed in `14.4.10`, `19.0.1`

## Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

## Severity and exploitation

- 8.6 High, CVSS 3.1: `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N`, from GitHub Advisory Database

- **CISA KEV:** Not listed.
- **EPSS:** No score.

## Timeline

- 31 Oct 2026, 15:12 UTC: First seen by agentprime
- 31 Oct 2026, 15:12 UTC: [Confirmed by OSV](https://osv.dev/vulnerability/GHSA-j9wr-49vq-rm5g)

## Sources

- [GitHub Advisory Database: GHSA-j9wr-49vq-rm5g](https://github.com/advisories/GHSA-j9wr-49vq-rm5g)
- [OSV: GHSA-j9wr-49vq-rm5g](https://osv.dev/vulnerability/GHSA-j9wr-49vq-rm5g)
- <https://github.com/vaadin/platform/security/advisories/GHSA-j9wr-49vq-rm5g>
- <https://github.com/vaadin/platform>
- <https://vaadin.com/security/cve-2021-31407>

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.

## Check whether this affects you

A Match means an installed version is in the affected range above. Most don’t affect the app; agentprime hasn’t analysed this one yet.

- With the agentprime MCP server (<https://api.agentprime.io/mcp>), ask your agent to check the project: `check_lockfile` sends a lockfile, `check_packages` a list of installed packages, and both return the Matches and the upgrades that clear them. `get_advisory` returns this record. Setup: <https://agentprime.io/mcp.md>
- In a browser: <https://agentprime.io/check/> reads your lockfile in the browser, never uploading it.
- Whether it touches your code, with file and line: the Claude Code plugin, <https://agentprime.io/plugin.md>
- As JSON: <https://api.agentprime.io/v1/advisories/GHSA-j9wr-49vq-rm5g>, or `POST https://api.agentprime.io/v1/match` with your packages (<https://agentprime.io/api.md>)

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The web page: <https://agentprime.io/advisories/GHSA-j9wr-49vq-rm5g/>. Everything for agents: <https://agentprime.io/llms.txt>.