Tools / fastmcp / Security

Security Deep Dive

fastmcp

Security posture and CVE patch evidence from tracked releases.

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1 critical dependency CVE affects v3.4.0.

Audit transitive dependencies; consider upgrading or pinning replacements.

— Signed — SLSA — SBOM ✓ Security policy Weekly cadence · 3d median Active maintainer

Trust Signals — 3 of 9 Present

Evidence already collected from releases and repository metadata.

3/9 Present

Signed releases Unknown

Latest release artifact signature Latest release

—

SLSA provenance Unknown

Attestation predicate level Latest release

—

SBOM published Unknown

GitHub SBOM API Latest release

—

SECURITY.md Present

GitHub repository metadata Repository policy

Checked: 23d ago

Release cadence: weekly Present

3d median over recent releases Release history

Latest release: 1d ago

Maintainer active Present

Recent commit activity Repository

Last commit: 3d ago

Checksums (SHA256SUMS) Not active yet

SHA256SUMS or equivalent Release asset

Latest release: 1d ago

GitHub Actions attestation Not active yet

actions/attest-build-provenance Workflow file

Latest release: 1d ago

Signing assets Not active yet

.sig, .crt, cosign.pub, or similar Release asset

Latest release: 1d ago

3.8/10 Security Score

Dependency Exposure 12 transitive dependency CVEs found in the latest SBOM. 1 critical.

Security Score

A composite score aggregating Scorecard performance, CVE patch history, OpenSSF badge tier, and dependency vulnerability exposure. Score ≥ 7.0 is healthy; < 4.0 warrants attention.

epss

0.25 / 0.5

No EPSS data

freshness

1.00 / 1.0

1d stale

scorecard

2.00 / 4.0

⚠ Estimated — not yet collected

cve health

0.00 / 2.5

⚠ No direct scan — 1c/5h transitive CVEs

patch speed

0.50 / 0.5

⚠ Estimated — no CVE patch history

kev exposure

1.50 / 1.5

No KEV exposure

supply chain risk

-1.48 / 10.0

Risk 14.8/100

Score breakdown

schema v2

Vulnerability posture

vulnerability posture

0.0

25%

direct cves: clear cve scan: estimated

Release responsiveness

release responsiveness

10.0

patch speed days: no_history

Dependency exposure

dependency exposure

8.5

10%

supply chain risk: 14.77 transitive cves: 1c/5h

Provenance trust

provenance trust

5.0

40%

scorecard score: estimated openssf badge: none

Maintainer health

maintainer health

10.0

10%

activity freshness: 1d

Operational risk

operational risk

8.5

10%

kev exposure: clear epss max: none

How is this calculated?

The six dimensions group the legacy score signals into weighted categories: direct vulnerability status, patch responsiveness, dependency exposure, provenance checks, maintainer activity, and exploitability risk. The flat component values above remain available for compatibility.

Supply Chain Risk

Risk 14.8/100

1 Transitive critical CVEs

0 KEV-transitive CVEs

62% Dependency freshness

OpenSSF Badge

OpenSSF none

Badge indicates adherence to open-source best practices.

Dependency Vulnerabilities

194 dependencies scanned View full dependency list →

Scanning the SBOM (Software Bill of Materials) of the latest release for known vulnerabilities in transitive dependencies.

Critical

High

Medium

Low

Unknown

Still affecting latest (1) All (12)

Critical 1 High 5 Medium 6

CVE	Severity	KEV	Dependency	Affected version	Cleared in release
CVE-2026-32871	critical	—	fastmcp	—	v3.3.0
CVE-2025-69196	high	—	fastmcp	—	v3.3.0
CVE-2026-27124	high	—	fastmcp	—	v3.3.0
CVE-2026-42561	high	—	python-multipart	0.0.26	v3.3.0
GHSA-c2jp-c369-7pvx	high	—	fastmcp	—	v3.3.0
GHSA-rcfx-77hg-w2wv	high	—	fastmcp	—	v3.3.0
CVE-2021-29510	medium	—	pydantic	—	v3.3.0
CVE-2024-3772	medium	—	pydantic	—	v3.3.0
CVE-2025-62800	medium	—	fastmcp	—	v3.3.0
CVE-2025-62801	medium	—	fastmcp	—	v3.3.0
CVE-2025-64340	medium	—	fastmcp	—	v3.3.0
CVE-2026-28684	medium	—	python-dotenv	—	v3.3.0

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