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verdande/SECURITY.md
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Kristian WindandClaude Opus 5 7c9bde2cfd docs(phase6): documentation site, landing page and open-source scaffolding
Material for MkDocs under docs/, covering self-hosting, the Rune, the
quick-add and filter languages, importing from Todoist, CalDAV,
mail-to-task, MCP, the AI layer and the API. The version is pinned: the
maintainers have announced that MkDocs 2.0 removes the plugin system
with no migration path, and an unpinned install would break this build
on the day it lands.

The landing page shows the quick-add parser as actual text rather than a
screenshot of it — that is the thing worth showing, and it reads better
as the real thing. It shares the app's design tokens, so the site and
what it describes look like one project.

MIT licence, contributing guide, security policy and issue templates.
Pages deployment is behind workflow_dispatch, so the docs build on every
push but nothing is published until the owner chooses to.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-08-17 08:08:36 +02:00

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# Security
## Reporting
Email **kristianwind@gmail.com** rather than opening an issue. Include what you
found, how to reproduce it, and what an attacker could do with it. You will get a
reply within a week.
## What verdande does about the obvious things
- **Passwords** are Argon2id with the parameters recorded in the hash, so they can
be raised later without locking anyone out.
- **Every token** — session, invite, reset, API, calendar feed, mail address — is
stored only as a SHA-256 hash. A database dump contains nothing that can be
presented.
- **Sessions** are `httpOnly`, `SameSite=Lax`, and `__Host-` prefixed over HTTPS.
- **Uploads** are stored content-addressed by hash and always served as
`application/octet-stream` with `nosniff`, so an uploaded SVG cannot run script
on this origin.
- **The filter language** compiles to parameterised SQL. No typed text is ever
concatenated into a statement.
- **Permission checks** are route middleware, and anything you may not see answers
404 rather than 403 — a 403 confirms the thing exists.
- **The CSP** is computed at startup by hashing the inline scripts in the built
page, rather than allowing `unsafe-inline`.
## What it does not do
verdande has no rate limiting beyond the login and password-reset endpoints, and
no audit log of reads. It is built to be run behind something — a Cloudflare
Tunnel, a reverse proxy, a VPN — by somebody who knows what they exposed.