Bug 2567452 (CVE-2026-77604)

Summary: CVE-2026-77604 code-graph-rag: code-graph-rag: Arbitrary file read via path traversal
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
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Priority: high    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in Code Graph RAG. When handling paginated file read requests, the application fails to properly validate and restrict file paths against the intended root directory. An unauthenticated attacker can exploit this vulnerability using absolute file paths or directory traversal sequences to access arbitrary files on the host system, leading to the disclosure of sensitive information such as credentials, configuration settings, and source code.
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Description OSIDB Bzimport 2026-11-05 21:59:03 UTC 
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.