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CVE-2026-88938— knowns through 0.33.0 Path Traversal via code.find MCP tool

Quick assessment

Affected
knowns-dev knowns
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.

受影响版本 0.33.0 未能将 MCP 工具的 参数限制在项目根目录下，从而允许 AI 代理会话读取主机上任意位置的源文件。攻击者可以通过向 参数提供绝对路径或相对路径穿越序列，从而获取预期项目目录之外的完整文件内容。

CVSS 6.5 · Medium

Possible ATT&CK Techniques 2 AI

T1108 T1006 · Direct Volume Access
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I. Basic Information for CVE-2026-88938

Vulnerability Information
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Vulnerability Title
knowns through 0.33.0 Path Traversal via code.find MCP tool
Source: CVE Program / CVE List V5
Vulnerability Description
knowns through 0.33.0 fails to confine the path argument of the code.find MCP tool to the project root, allowing AI agent sessions to read source files anywhere on the host. Attackers can supply absolute paths or relative traversal sequences to the path argument and retrieve full file contents from outside the intended project directory.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/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
knowns-dev knowns 0 ~ 0.33.0 -

II. Public POCs for CVE-2026-88938

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-88938

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Other References for CVE-2026-88938 (2)

Same Patch Batch · knowns-dev · 2026-09-10 · 5 CVEs total

CVE-2026-88899 9.8 CRITICAL knowns before 0.31.0 External Control of Agent Working Directory via x-opencode-directory
CVE-2026-88937 8.8 HIGH knowns through 0.33.0 Path Traversal via Template Engine
CVE-2026-88939 8.3 HIGH knowns through 0.33.0 Authorization Bypass via project.set Bootstrap Exemption
CVE-2026-88940 5.3 MEDIUM knowns through 0.33.0 Arbitrary Directory Enumeration via workspace browse endpoint

IV. Related Vulnerabilities

Same product: knowns
Same vendor: knowns-dev
Same weakness: CWE-22

V. Comments for CVE-2026-88938

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