CVE-2026-5327 | efforthye fast-filesystem-mcp up to 3.5.1 src/index.ts handleGetDiskUsage command injection (Issue 15)

VDB-354658 · CVE-2026-5327 · ISSUE 15 EFFORTHYE FAST-FILESYSTEM-MCP UP TO 3.5.1 SRC/INDEX.TS HANDLEGETDISKUSAGE COMMAND INJECTION HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 6.0 $0-$5k 1.22+ 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. Productinfo Vendor efforthye Name fast-filesystem-mcp Version 3.5.0 3.5.1 Website Product: https://github.com/efforthye/fast-filesystem-mcp/ 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 Vector Complexity Authentication Confidentiality Integrity Availability Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock 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: 🔒 Price Prediction: 🔍 Current Price Estimation: 🔒 0-Day Unlock Unlock Unlock Unlock Today Unlock Unlock Unlock Unlock 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 04/01/2026 +0 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 scip Labs: https://www.scip.ch/en/?labs.20161013 Entryinfo Created: 04/01/2026 15:32 Changes: 04/01/2026 15:32 (57) Complete: 🔍 Submitter: Yinci Chen Cache ID: 99:A02:101 Submitinfo Accepted Submit #780776: efforthye fast-filesystem-mcp <= 3.5.1 Command Injection (by Yinci Chen) Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸