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In limbo for 27 days

GHSA-mhwm-p596-p7q4

fastmcp on PyPI · published in prefecthq/fastmcp

Read the advisory on GitHub ↗

Fixed in 3.4.8. Dependabot, npm audit and OSV-Scanner won’t flag this yet. Find it in your project

Facts

Severity
High · CVSS score 8.1CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Affected versions (fastmcp)
>= 3.0.0b1, < 3.4.8As entered by the maintainer. Not reviewed.
Fixed in (fastmcp)
3.4.8
Affected versions (fastmcp)
>= 4.0.0a1, < 4.0.11As entered by the maintainer. Not reviewed.
Fixed in (fastmcp)
4.0.11
CVE
None cited by the advisory
GitHub Advisory Database
Not reviewed
OSV.dev
Not present
Other CVEs pointing here
None found in the CVE List

If you use fastmcp >= 3.0.0b1, < 3.4.8

Upgrade to 3.4.8 or later. Dependabot, npm audit and OSV-Scanner won’t flag this yet.

Timeline

  1. 2026-10-16 15:19 UTC

    Published by the maintainers

    No CVE cited

  2. 2026-10-28 08:43 UTC

    First seen by Limbowatch

    not reviewed · not in OSV

  3. Waiting

    Reviewed by GitHub

  4. Waiting

    In OSV; scanners can see it

Machine-readable record: feed/GHSA-mhwm-p596-p7q4.json