---
id: "CVE-2026-87008"
page: "https://infrastack.ai/live/CVE-2026-87008"
kind: "vulnerability"
aliases: ["CVE-2026-87008"]
title: "Code Graph RAG: symlinks let analyzed repositories read and overwrite outside files"
severity: "high"
cvss: 7.1
epss: null
exploited: false
status: "open"
category: "ai-tooling"
products: []
ecosystems: []
tags: ["ai-agents", "ai-tooling", "code-graph-rag", "mcp", "python"]
not_affected_if: ["trusted-repositories-only", "version-0.0.589-or-later"]
published_at: "2026-11-05T21:18:54+00:00"
first_seen_at: "2026-11-05T21:40:45+00:00"
updated_at: "2026-11-05T21:41:13+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-87008", "first_seen_at": "2026-11-05T21:40:45+00:00"}]
exploit_sources: []
---

# Code Graph RAG: symlinks let analyzed repositories read and overwrite outside files

Link for people: https://infrastack.ai/live/CVE-2026-87008 (this .md is for agents)

Code Graph RAG, an AI tool that builds a knowledge graph of code, follows symbolic links inside an analyzed repository to files outside the configured project root. An attacker who gets a victim to analyze a repository containing such a link can read credentials and environment files, and can overwrite writable files through the structural replace tool.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check the installed Code Graph RAG version is below `0.0.589`.
- Search analyzed repositories for symbolic links pointing outside the project root, for example with `find . -type l`.

## Fix

- Code Graph RAG: upgrade to `0.0.589`.

## Timeline

- 2026-11-05T21:40:45+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-87008

## Documents

- [advisory] Vendor advisory: github.com https://github.com/vitali87/code-graph-rag/security/advisories/GHSA-85gg-2gfq-q95m
- [fix] Patch: github.com https://github.com/vitali87/code-graph-rag/commit/2648c95aa550ce2d9361a8e75ed669d5f4b451b8
- [fix] Release notes: github.com https://github.com/vitali87/code-graph-rag/releases/tag/v0.0.589

## From the sources

Code Graph RAG is an AI-powered knowledge graph and retrieval system for querying, understanding, and editing multi-language codebases. Prior to 0.0.589, AstGrepService in codebase_rag/tools/ast_grep_service.py enumerates files beneath project_root and relies on should_skip_path in codebase_rag/utils/path_utils.py to classify them, but the containment check operates on unresolved lexical paths. A symbolic link planted inside an analyzed repository can therefore reference a file outside the configured root while still appearing in scope. The structural_search tool follows the link and discloses readable content without an approval gate, while structural_replace with dry_run=False follows it and overwrites writable content; the MCP path invokes structural replacement without the agent-loop approval control. An attacker who causes a victim to analyze a repository containing such a link can read credentials, keys, environment files, or sibling source and can modify files accessible to the code-graph-rag process. This issue is fixed in version 0.0.589.

---

_Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai_