CVE-2026-55609
Received Received - Intake

Path Traversal in sublinear-time-solver

Publication date: 2026-08-25

Last updated on: 2026-08-25

Assigner: GitHub, Inc.

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.

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Meta Information

Published
2026-08-25
Last Modified
2026-08-25
Generated
2026-08-25
AI Q&A
2026-08-25
EPSS Evaluated
N/A
NVD
CVE-2026-55609
EUVD
EUVD-2026-65706

Affected Vendors & Products

Currently, no data is known.

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-73 The product allows user input to control or influence paths or file names that are used in filesystem operations.

Attack-Flow Graph

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Executive Summary

CVE-2026-55609 is a path-traversal vulnerability in the sublinear-time-solver library. It affects tools like export_state and import_state in the MCP server, which accept attacker-controlled file paths without validation. This allows reading or writing arbitrary files accessible to the server process, leading to confidentiality and integrity loss.

Detection Guidance

Check if you are running vulnerable versions of consciousness-explorer (<1.1.2) or sublinear-time-solver (<1.6.0). Inspect MCP server logs for suspicious file operations or path traversal attempts in export_state, import_state, saveVectorToFile, or loadVectorFromFile tools.

Impact Analysis

An attacker could exploit this to read sensitive files, overwrite critical system files, or disrupt services. For example, they might overwrite ~/.ssh/authorized_keys to gain unauthorized access or modify application files to alter behavior. The impact depends on the server's privileges.

Compliance Impact

This vulnerability could lead to violations of GDPR (data confidentiality) or HIPAA (protected health information integrity) if sensitive data is exposed or altered. Unauthorized file access may result in non-compliance with data protection requirements.

Mitigation Strategies

Upgrade to consciousness-explorer 1.1.2+ or sublinear-time-solver 1.6.0+. If upgrading is not possible, restrict MCP server access to trusted clients, disable export_state and import_state tools, run the server with minimal privileges, and enforce strict filesystem permissions.

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