# Kozou: Unauthenticated MCP HTTP server and bundled dev-stack hardening (DNS-rebinding, request-body limits, read-only reads, default network exposure)

Advisory record · `GHSA-v52w-28xh-v562`

- **Identifiers:** `GHSA-v52w-28xh-v562`
- **State:** Confirmed
- **Severity:** CVSS 4.0, no score published
- **Critical:** No
- **Weakness (CWE):** [CWE-272](https://cwe.mitre.org/data/definitions/272.html) · [CWE-346](https://cwe.mitre.org/data/definitions/346.html) · [CWE-770](https://cwe.mitre.org/data/definitions/770.html) · [CWE-1188](https://cwe.mitre.org/data/definitions/1188.html)
- **Tags:** [Denial of service](https://agentprime.io/advisories/tag/dos.md) · [CWE-272](https://agentprime.io/advisories/tag/cwe-272.md) · [CWE-346](https://agentprime.io/advisories/tag/cwe-346.md) · [CWE-1188](https://agentprime.io/advisories/tag/cwe-1188.md)
- **Published:** 19 Jun 2026
- **Updated:** 10 Sept 2026
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 19 Jun 2026, 20:47 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Affected packages

- `kozou` (npm): affected `<1.8.1`; fixed in `1.8.1`
- `@kozou/api` (npm): affected `<1.8.1`; fixed in `1.8.1`
- `@kozou/mcp` (npm): affected `<1.8.1`; fixed in `1.8.1`
- `@kozou/core` (npm): affected `<1.8.1`; fixed in `1.8.1`

## 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

- Score not published, CVSS 4.0: `CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/VA:H/SC:N/SI:N/SA:N`, from GitHub Advisory Database

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

## Timeline

This record came from the full history of the GitHub Advisory Database, published 19 Jun 2026. New records show when each source confirmed them.

## Sources

- [GitHub Advisory Database: GHSA-v52w-28xh-v562](https://github.com/advisories/GHSA-v52w-28xh-v562)
- [OSV: GHSA-v52w-28xh-v562](https://osv.dev/vulnerability/GHSA-v52w-28xh-v562)
- <https://github.com/kozou-dev/kozou/security/advisories/GHSA-v52w-28xh-v562>
- <https://github.com/kozou-dev/kozou>

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-v52w-28xh-v562>, 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-v52w-28xh-v562/>. Everything for agents: <https://agentprime.io/llms.txt>.