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CVE-2026-81486— bsmi021 mcp-file-context-server Path Resolution index.ts read_context path traversal

Quick assessment

Affected
bsmi021 mcp-file-context-server
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 bsmi021 的 mcp-file-context-server 1.0.0 版本中检测到一个漏洞。该漏洞影响组件“路径解析”中 文件里的 函数。对参数 进行操作可导致路径穿越（path traversal）漏洞。攻击者可以远程发起攻击。利用方式现已公开，可能被用于攻击。该项目早已通过问题报告得知此问题，但尚未做出响应。

CVSS 5.3 · Medium
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I. Basic Information for CVE-2026-81486

Vulnerability Information
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Vulnerability Title
bsmi021 mcp-file-context-server Path Resolution index.ts read_context path traversal
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability was detected in bsmi021 mcp-file-context-server 1.0.0. Affected by this issue is the function read_context of the file src/index.ts of the component Path Resolution. Performing a manipulation of the argument path results in path traversal. It is possible to initiate the attack remotely. The exploit is now public and may be used. The project was informed of the problem early through an issue report but has not responded yet.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
bsmi021 mcp-file-context-server 1.0.0 cpe:2.3:a:bsmi021:mcp-file-context-server:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-81486

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III. Intelligence Information for CVE-2026-81486

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Vendor Advisories for CVE-2026-81486 (1)

Proof of Concept for CVE-2026-81486 (1)

Other References for CVE-2026-81486 (3)

IV. Related Vulnerabilities

Same weakness: CWE-22

V. Comments for CVE-2026-81486

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