vitali87 Code Graph RAG up to 0.0.344 Paginated Branch tools.py MCPToolsRegistry.read_file file_path path traversal

Summaryinfo

A vulnerability labeled as problematic has been found in vitali87 Code Graph RAG up to 0.0.344. Affected is the function MCPToolsRegistry.read_file of the file codebase_rag/mcp/tools.py of the component Paginated Branch. Such manipulation of the argument file_path leads to path traversal. This vulnerability is uniquely identified as CVE-2026-77604. The attack can be launched remotely. No exploit exists. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in vitali87 Code Graph RAG up to 0.0.344 and classified as problematic. Affected by this issue is the function MCPToolsRegistry.read_file of the file codebase_rag/mcp/tools.py of the component Paginated Branch. The manipulation of the argument file_path with an unknown input leads to a path traversal vulnerability. Using CWE to declare the problem leads to CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. Impacted is confidentiality. CVE summarizes:

Code Graph RAG is an AI-powered knowledge graph and retrieval system for querying, understanding, and editing multi-language codebases. Prior to 0.0.345, the MCPToolsRegistry.read_file implementation in codebase_rag/mcp/tools.py joins attacker-controlled file_path input to project_root without resolving and verifying containment when offset or limit selects the paginated branch. An absolute path causes pathlib to discard the configured root, while relative traversal can also resolve outside it. The protected non-paginated branch uses validate_project_path, but the paginated branch bypasses that validation before opening the path. An unauthenticated caller of a network-exposed HTTP MCP server can therefore read arbitrary UTF-8-readable files available to the server process, including credentials, environment data, private keys, source, and configuration; local callers through the stdio transport can reach the same vulnerable code path. This issue is fixed in version 0.0.345.

The advisory is shared for download at github.com. This vulnerability is handled as CVE-2026-77604 since 08/20/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1006.

Upgrading to version 0.0.345 eliminates this vulnerability.

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Productinfo

Vendor

• vitali87

Name

• Code Graph RAG

Version

• 0.0.344

CPE 2.3info

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CPE 2.2info

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