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brein-mcp 0.5.14

Anomalous package hides outbound data exfiltration

“A policy-aware MCP server for an org-wide knowledge brain that lives in a git repo.”

Anomalous package hides outbound data exfiltrationAnomalous package runs an obfuscated install hook

SHA-2564a7cdbaf9c850681f8fff058758f0ff773ca78231999c33cdaa14a8928638466

URLhttps://files.pythonhosted.org/packages/b7/bc/574f0e48a511db28be5b91d8513a136d2cc5ce7eb187f1944a9690f627ed/brein_mcp-0.5.14-py3-none-any.whl

MaleculeK(Li)O₄(S₃CErEu)H₅(Cm₆DbF₂Os₂Po₃)Md(Pt)

Evidence

imports os lines 1–12

1"""Environment-driven configuration for the brain MCP server."""
2
3from __future__ import annotations
4
5import os
6import re
7from pathlib import Path
8
9_HOME = Path.home()
10REPO_PATH = Path(os.environ.get("BRAIN_REPO", str(_HOME / ".brein" / "brain"))).resolve()
11DOCS_PATH = REPO_PATH / "docs"
12MAX_READ_CHARS = int(os.environ.get("BR …

Python reads credential-named environment variable lines 13–16

13:71… "telemetry" / "retrieval-log.jsonl")))
14VECTOR_INDEX_PATH = Path(os.environ.get("BRAIN_VECTOR_INDEX", str(_HOME / ".brein" / "vector-index.json")))
15EMBEDDING_MODEL_NAME = os.environ.get("BRAIN_EMBEDDING_MODEL", "BAAI/bge-small-en-v1.5")
16VE …

Python getenv name contains KEY lines 17–20

17:47… IN_VECTOR_CHUNK_OVERLAP", "250"))
18HYBRID_KEYWORD_WEIGHT = float(os.environ.get("BRAIN_HYBRID_KEYWORD_WEIGHT", "0.55"))
19HYBRID_VECTOR_WEIGHT = float(os.environ.get("BRAIN_HYBRID_VECTOR_WEIGHT", "0.45"))
20HASH …

Compiles a set of Python regex patterns lines 30–35

30:66… ")
31RERANK_BIN_DEFAULT = os.environ.get("BRAIN_RERANK_BIN", "")
32
33SECRET_PATTERNS = [
34    re.compile(r"(?i)(password|passwd|pwd|api[_-]?key|x-api-key|secret|token|auth[_-]?token|private[_-]?key)\s*[:=]\s*[^\s`'\"]{8,}"),
35    re.c …

Python references an AI agent skill tree lines 41–51

41:26… A|ASIA)[A-Z0-9]{16}\b"),
42]
43
44ALLOWED_WRITE_PREFIXES = ("docs/", "skills/", "templates/")
45ALLOWED_ROOT_WRITES = {"AGENTS.md", "README.md", "CONTRIBUTING.md"}
46STOPWORDS = {
47    "a", "an", "and", "are", "as", "at", "be", "by", "for", "from", "how",
48    "in", "is", "it", "of", "on", "or", "our", "the", "to", "what", "when",
49    "where", "who", "why", "with", "does", "do", "we", "have", "has",
50    "against", "about",
51}

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