{"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,"slug":"CVE-2026-87008","body":"## Overview\n\nCode 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.\n\n## Affected\n\n- `code-graph-rag < 0.0.589`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":51,"depthScoreParts":{"impact":39.1,"likelihood":0.1,"exploitation":12,"ransomware":0},"changes":[]}