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Update SECURITY.md: supported versions, SSRF and YAML injection mitigations

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Safi
2026-04-06 22:38:02 +01:00
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SECURITY.md
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@@ -4,8 +4,8 @@
| Version | Supported |
|---------|-----------|
| 0.1.x | Yes |
| < 0.1 | No |
| 0.3.x | Yes |
| < 0.3 | No |
## Reporting a Vulnerability
@@ -28,13 +28,13 @@ graphify is a **local development tool**. It runs as a Claude Code skill and opt
| Vector | Mitigation |
|--------|-----------|
| SSRF via URL fetch | `security.validate_url()` allows only `http` and `https` schemes. Redirect targets are re-validated by `_NoFileRedirectHandler` - a redirect to `file://` is blocked. |
| SSRF via URL fetch | `security.validate_url()` allows only `http` and `https` schemes, blocks private/loopback/link-local IPs, and blocks cloud metadata endpoints. Redirect targets are re-validated. All fetch paths including tweet oEmbed go through `safe_fetch()`. |
| Oversized downloads | `safe_fetch()` streams responses and aborts at 50 MB. `safe_fetch_text()` aborts at 10 MB. |
| Non-2xx HTTP responses | `safe_fetch()` raises `HTTPError` on non-2xx status codes - error pages are not silently treated as content. |
| Path traversal in MCP server | `security.validate_graph_path()` resolves paths and requires them to be inside `graphify-out/`. Also requires the `graphify-out/` directory to exist. |
| XSS in graph HTML output | `security.sanitize_label()` strips control characters, caps at 256 chars, and HTML-escapes all node labels and edge titles before pyvis embeds them. |
| Prompt injection via node labels | `sanitize_label()` also applied to MCP text output - node labels from user-controlled source files cannot break the text format returned to agents. |
| YAML frontmatter injection | Newlines stripped from user-provided strings before embedding in YAML frontmatter (e.g. in `save_query_result()`). |
| YAML frontmatter injection | `_yaml_str()` escapes backslashes, double quotes, and newlines before embedding user-controlled strings (webpage titles, query questions) in YAML frontmatter. |
| Encoding crashes on source files | All tree-sitter byte slices decoded with `errors="replace"` - non-UTF-8 source files degrade gracefully instead of crashing extraction. |
| Symlink traversal | `os.walk(..., followlinks=False)` is explicit throughout `detect.py`. |
| Corrupted graph.json | `_load_graph()` in `serve.py` wraps `json.JSONDecodeError` and prints a clear recovery message instead of crashing. |