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TI-2025-33102 Aliases CVE-2025-53109GHSA-q66q-fx2p-7w4m

Model Context Protocol Servers Vulnerable to Path Validation Bypass via Prefix Matching and Symlink Handling

Priority LOW 33CWE-59Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Passive
Attack complexity
Low
Attack requirements
Present
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-59 and the CVSS impact.

Summary

Model Context Protocol Servers is a collection of reference implementations for the model context protocol (MCP). Versions of Filesystem prior to 0.6.4 or 2025.7.01 could allow access to unintended files via symlinks within allowed directories. Users are advised to upgrade to 0.6.4 or 2025.7.01 resolve.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00765 55th percentileScored 2026-11-07
Fix Fixed servers (modelcontextprotocol): 0.6.4, 2025.7.01@modelcontextprotocol/server-filesystem (npm): 2025.7.1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
MLflowserversbefore 0.6.4; before 2025.7.010.6.4, 2025.7.01Patch availableCNA
—@modelcontextprotocol/server-filesystem (npm)up to 0.6.2—No fix listedGHSA-q66q-fx2p-7w4m
—@modelcontextprotocol/server-filesystem (npm)2025.1.14 to before 2025.7.12025.7.1Patch availableGHSA-q66q-fx2p-7w4m
  • servers VendorMLflow Affected before 0.6.4; before 2025.7.01 Fixed in 0.6.4, 2025.7.01 Patch available CNA
  • @modelcontextprotocol/server-filesystem (npm) Vendor— Affected up to 0.6.2 Fixed in — No fix listed GHSA-q66q-fx2p-7w4m
  • @modelcontextprotocol/server-filesystem (npm) Vendor— Affected 2025.1.14 to before 2025.7.1 Fixed in 2025.7.1 Patch available GHSA-q66q-fx2p-7w4m

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:lfprojects:model_context_protocol_servers:*:*:*:*:*:*:*:*——MLflow
  • cpe:2.3:a:lfprojects:model_context_protocol_servers:*:*:*:*:*:*:*:* Versions — — ·MLflow

Remediation

  • Fix · CNA servers (modelcontextprotocol) Fixed in 0.6.4, 2025.7.01
  • Fix · GHSA-q66q-fx2p-7w4m @modelcontextprotocol/server-filesystem (npm) Fixed in 2025.7.1 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-53109
  2. 2026-10-03 Alias added: GHSA-q66q-fx2p-7w4m

References

Advisory 1

Other 3

  • TI-2026-46366 Server-side request forgery in mlflow KEVCVSS 3.1CRITICAL 9.3
  • TI-2023-03518 Absolute Path Traversal in mlflow/mlflow CVSS 3.1CRITICAL 10.0
  • TI-2023-01113 Path Traversal: '\..\filename' in mlflow/mlflow CVSS 3.1CRITICAL 9.8
  • TI-2025-31759 Redis Lua Use-After-Free may lead to remote code execution CVSS 3.1CRITICAL 10.0
  • TI-2026-81527 Code execution via scorer deserialization in MLflow servers CVSS 3.1CRITICAL 9.8
  • TI-2025-14028 Command Injection in mlflow/mlflow CVSS 3.1CRITICAL 10.0
See all 175 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences