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CVE-2026-55609— sublinear-time-solver: Arbitrary file write in consciousness-explorer / sublinear-time-solver MCP export_state

Quick assessment

Affected
ruvnet sublinear-time-solver
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.

是一个用于在亚线性时间内求解非对称对角占优系统的 Rust 和 WebAssembly 库。在 1.1.2 和 1.6.0 版本之前， 中的 和 工具会将攻击者可控制的文件路径参数直接传递给 中的文件系统操作，而未对目标路径进行限制，也未拒绝目录遍历请求。同时， 中的 和 工具通过 参数也存在类似的安全缺陷（属于同一类漏洞入口）。攻击者若能调用这些 MCP 工具，便可读取、写入或覆盖服务器进程可访问的任何文件，从而导致机密性和完整性受损，并可能引发服务中断。该问题已在 1.1.2 和 1.6.0 版本中得到修复。

CVSS 7.1 · High

Possible ATT&CK Techniques 2 AI

T1043 T1552 · Unsecured Credentials

Affected Version Matrix 1

VendorProduct Version RangeStatus
ruvnet sublinear-time-solver < 1.6.0 affected
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I. Basic Information for CVE-2026-55609

Vulnerability Information
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Vulnerability Title
sublinear-time-solver: Arbitrary file write in consciousness-explorer / sublinear-time-solver MCP export_state
Source: CVE Program / CVE List V5
Vulnerability Description
sublinear-time-solver is a Rust and WebAssembly library for solving asymmetric diagonally dominant systems in sublinear time. Prior to consciousness-explorer 1.1.2 and sublinear-time-solver 1.6.0, the export_state and import_state tools in src/consciousness-explorer/mcp/server.js pass the attacker-controlled filepath parameter to filesystem operations in src/consciousness-explorer/index.js without restricting the destination or rejecting traversal. The saveVectorToFile and loadVectorFromFile tools in src/mcp/server.ts contain the same sink class through the file_path parameter. An attacker able to invoke the MCP tools can read, write, or overwrite any file accessible to the server process, causing confidentiality and integrity loss and possible service disruption. This issue is fixed in consciousness-explorer 1.1.2 and sublinear-time-solver 1.6.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
文件名或路径的外部可控制
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
ruvnet sublinear-time-solver < 1.6.0 -

II. Public POCs for CVE-2026-55609

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III. Intelligence Information for CVE-2026-55609

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Patches & Fixes for CVE-2026-55609 (4)

Vendor Advisories for CVE-2026-55609 (1)

Exploits & Public PoCs for CVE-2026-55609 (1)

Other References for CVE-2026-55609 (1)

IV. Related Vulnerabilities

Same product: sublinear-time-solver
Same vendor: ruvnet
Same weakness: CWE-73

V. Comments for CVE-2026-55609

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