efforthye fast-filesystem-mcp up to 3.5.1 src/index.ts handleGetDiskUsage command injection

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.0$0-$5k0.93

Summaryinfo

A vulnerability labeled as critical has been found in efforthye fast-filesystem-mcp up to 3.5.1. The impacted element is the function handleGetDiskUsage of the file src/index.ts. Executing a manipulation can lead to command injection. This vulnerability appears as CVE-2026-5327. The attack may be performed from remote. In addition, an exploit is available. The project was informed of the problem early through an issue report but has not responded yet.

Detailsinfo

A vulnerability has been found in efforthye fast-filesystem-mcp up to 3.5.1 and classified as critical. This vulnerability affects the function handleGetDiskUsage of the file src/index.ts. The manipulation with an unknown input leads to a command injection vulnerability. The CWE definition for the vulnerability is CWE-77. The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component. As an impact it is known to affect confidentiality, integrity, and availability.

The advisory is available at github.com. This vulnerability was named CVE-2026-5327. The exploitation appears to be easy. The attack can be initiated remotely. Technical details and also a public exploit are known. This vulnerability is assigned to T1202 by the MITRE ATT&CK project.

It is possible to download the exploit at github.com. It is declared as proof-of-concept. The project was informed of the problem early through an issue report but has not responded yet.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-18202). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Vendor

Name

Version

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.0

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Command injection
CWE: CWE-77 / CWE-74 / CWE-707
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

04/01/2026 Advisory disclosed
04/01/2026 +0 days VulDB entry created
04/02/2026 +1 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: 15
Status: Confirmed

CVE: CVE-2026-5327 (🔒)
GCVE (CVE): GCVE-0-2026-5327
GCVE (VulDB): GCVE-100-354658
EUVD: 🔒
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 04/01/2026 15:32
Updated: 04/02/2026 15:51
Changes: 04/01/2026 15:32 (57), 04/02/2026 15:51 (1)
Complete: 🔍
Submitter: Yinci Chen
Cache ID: 216:036:103

Submitinfo

Accepted

  • Submit #780776: efforthye fast-filesystem-mcp <= 3.5.1 Command Injection (by Yinci Chen)

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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