# MLflow authentication requirement bypass can allow a user to arbitrarily create an account

Advisory record · `GHSA-4qq5-mxxx-m6gg`

- **Identifiers:** `GHSA-4qq5-mxxx-m6gg` · `BIT-mlflow-2023-6014` · `CVE-2023-6014` · `PYSEC-2026-415`
- **State:** Confirmed
- **Severity:** CVSS 9.1 Critical
- **Critical:** Yes: CVSS 9+
- **Weakness (CWE):** [CWE-598](https://cwe.mitre.org/data/definitions/598.html)
- **Tags:** [CWE-598](https://agentprime.io/advisories/tag/cwe-598.md)
- **Published:** 29 Jun 2026
- **Updated:** 1 Jul 2026
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 29 Jun 2026, 11:50 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Critical

Critical, because:

- CVSS score 9.1: 9.0 or more.

How we decide what’s critical: <https://agentprime.io/advisories/critical.md>

## Affected packages

- `mlflow` (PyPI): affected `<2.8.0`; fixed in `2.8.0`

## 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

- 9.1 Critical, CVSS 3.0: `CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N`, from CNA (@huntr_ai)

- **CISA KEV:** Not listed.
- **EPSS:** 0.012, the 67th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

This record came from the full history of the GitHub Advisory Database, published 29 Jun 2026. New records show when each source confirmed them.

## Sources

- [GitHub Advisory Database: GHSA-4qq5-mxxx-m6gg](https://github.com/advisories/GHSA-4qq5-mxxx-m6gg)
- [OSV: GHSA-4qq5-mxxx-m6gg](https://osv.dev/vulnerability/GHSA-4qq5-mxxx-m6gg)
- <https://nvd.nist.gov/vuln/detail/CVE-2023-6014>
- <https://github.com/mlflow/mlflow/issues/9669>
- <https://github.com/mlflow/mlflow/pull/9700>
- <https://github.com/mlflow/mlflow/commit/32de2154ef9f946160e5dc01a4d8a449dd0bd259>
- <https://github.com/mlflow/mlflow>
- <https://github.com/mlflow/mlflow/releases/tag/v2.8.0>
- <https://huntr.com/bounties/3e64df69-ddc2-463e-9809-d07c24dc1de4>
- <https://pypi.org/project/mlflow>
- <https://github.com/advisories/GHSA-4qq5-mxxx-m6gg>

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-4qq5-mxxx-m6gg>, 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-4qq5-mxxx-m6gg/>. Everything for agents: <https://agentprime.io/llms.txt>.