---
id: CVE-2026-87008
title: Code Graph RAG structural tools follow out-of-root symlinks
summary: >-
  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 p…
severity: high
cvss: 7.1
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N'
cvssSource: cna
cwe:
  - CWE-22
  - CWE-59
vendor: vitali87
product: code-graph-rag
affected:
  - code-graph-rag < 0.0.589
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-11-05T21:03:34.665618Z'
exploitAvailable: true
published: '2026-11-05'
updated: '2026-11-05'
sourceUpdated: '2026-11-05T21:03:52.501Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-87008'
references:
  - url: >-
      https://github.com/vitali87/code-graph-rag/security/advisories/GHSA-85gg-2gfq-q95m
    label: >-
      https://github.com/vitali87/code-graph-rag/security/advisories/GHSA-85gg-2gfq-q95m
  - url: >-
      https://github.com/vitali87/code-graph-rag/commit/2648c95aa550ce2d9361a8e75ed669d5f4b451b8
    label: >-
      https://github.com/vitali87/code-graph-rag/commit/2648c95aa550ce2d9361a8e75ed669d5f4b451b8
  - url: 'https://github.com/vitali87/code-graph-rag/releases/tag/v0.0.589'
    label: 'https://github.com/vitali87/code-graph-rag/releases/tag/v0.0.589'
tags:
  - cve.org
  - exploit-available
exploits:
  github: 1
  githubRepos:
    - 'https://github.com/squeeze440/code-graph-rag-PoC'
  checkedAt: '2026-11-07T18:35:06.228Z'
ingestedAt: '2026-11-05T22:38:31.978Z'
epss: 0.00264
epssPercentile: 0.18361
---

## Overview

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.

## Affected

- `code-graph-rag < 0.0.589`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.