vestige/SECURITY.md
Sam Valladares 04781a95e2 feat: v2.0.4 "Deep Reference" — cognitive reasoning engine + 10 bug fixes
New features:
- deep_reference tool (#22): 8-stage cognitive reasoning pipeline with FSRS-6
  trust scoring, intent classification (FactCheck/Timeline/RootCause/Comparison/
  Synthesis), spreading activation expansion, temporal supersession, trust-weighted
  contradiction analysis, relation assessment, dream insight integration, and
  algorithmic reasoning chain generation — all without calling an LLM
- cross_reference (#23): backward-compatible alias for deep_reference
- retrieval_mode parameter on search (precise/balanced/exhaustive)
- get_batch action on memory tool (up to 20 IDs per call)
- Token budget raised from 10K to 100K on search + session_context
- Dates (createdAt/updatedAt) on all search results and session_context lines

Bug fixes (GitHub Issue #25 — all 10 resolved):
- state_transitions empty: wired record_memory_access into strengthen_batch
- chain/bridges no storage fallback: added with edge deduplication
- knowledge_edges dead schema: documented as deprecated
- insights not persisted from dream: wired save_insight after generation
- find_duplicates threshold dropped: serde alias fix
- search min_retention ignored: serde aliases for snake_case params
- intention time triggers null: removed dead trigger_at embedding
- changelog missing dreams: added get_dream_history + event integration
- phantom Related IDs: clarified message text
- fsrs_cards empty: documented as harmless dead schema

Security hardening:
- HTTP transport CORS: permissive() → localhost-only
- Auth token panic guard: &token[..8] → safe min(8) slice
- UTF-8 boundary fix: floor_char_boundary on content truncation
- All unwrap() removed from HTTP transport (unwrap_or_else fallback)
- Dream memory_count capped at 500 (prevents O(N²) hang)
- Dormant state threshold aligned (0.3 → 0.4)

Stats: 23 tools, 758 tests, 0 failures, 0 warnings, 0 unwraps in production

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
2026-04-09 16:15:26 -05:00

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# Security Policy
## Supported Versions
| Version | Supported |
| ------- | ------------------ |
| 2.0.x | :white_check_mark: |
| 1.x | :x: |
## Reporting a Vulnerability
If you discover a security vulnerability in Vestige, please report it responsibly:
1. **DO NOT** open a public GitHub issue
2. Email the maintainer directly (see GitHub profile)
3. Include:
- Description of the vulnerability
- Steps to reproduce
- Potential impact
- Suggested fix (if any)
You can expect a response within 48 hours.
## Security Model
### Trust Boundaries
Vestige is a **local MCP server** designed to run on your machine with your user permissions:
- **Trusted**: The MCP client (Claude Code/Desktop) that connects via stdio
- **Untrusted**: Content passed through MCP tool arguments (validated before use)
### What Vestige Does NOT Do
- ❌ Make network requests (except first-run model download from Hugging Face)
- ❌ Execute shell commands
- ❌ Access files outside its data directory
- ❌ Send telemetry or analytics
- ❌ Phone home to any server
### Data Storage
All data is stored locally in SQLite:
| Platform | Location |
|----------|----------|
| macOS | `~/Library/Application Support/com.vestige.core/vestige.db` |
| Linux | `~/.local/share/vestige/core/vestige.db` |
| Windows | `%APPDATA%\vestige\core\vestige.db` |
**Default**: Data is stored in plaintext with owner-only file permissions (0600).
### Encryption at Rest
For database-level encryption, build with SQLCipher:
```bash
cargo build --no-default-features --features encryption,embeddings,vector-search
```
Set `VESTIGE_ENCRYPTION_KEY` environment variable. SQLCipher encrypts all database files including the WAL journal. Alternatively, use OS-level encryption (FileVault, BitLocker, LUKS).
### Input Validation
All MCP tool inputs are validated:
- Content size limit: 1MB max
- Query length limit: 1000 characters
- FTS5 queries are sanitized to prevent injection
- All SQL uses parameterized queries (`params![]` macro)
### Dependencies
We use well-maintained dependencies and run `cargo audit` regularly. Current status:
- **Vulnerabilities**: 0
- **Warnings**: 2 (unmaintained transitive dependencies with no known CVEs)
## Security Checklist
- [x] No hardcoded secrets
- [x] Parameterized SQL queries
- [x] Input validation on all tools
- [x] No command injection vectors
- [x] No unsafe Rust code
- [x] Dependencies audited