Security (must-fix):
- sandbox.controller: the anonymous GET /api/sb/:id response now sets
X-Content-Type-Options: nosniff, a restrictive CSP, and Content-Disposition=
attachment for any mime outside a raster-image allowlist (png/jpeg/gif/webp/
avif). entry.mime is attacker-controlled, so an evil.svg/evil.html could
otherwise execute script inline on the Docmost origin (stored XSS). Mirrors
the public attachment route's hardening.
Stability:
- client.stashPage: reconcile mirrors AFTER the final document put, not only
before it. The doc blob is the newest entry and FIFO eviction drops the
oldest = this stash's own images, so the stored doc could reference an
evicted blob (consumer 404) and over-report images.mirrored. A bounded loop
now reverts doc-put-evicted mirrors, drops the stale doc blob, and re-puts
until stable. Regenerated packages/mcp/build/.
- sandbox.controller: emit Cache-Control on the 304 branch too (ttlSeconds is
computed before the conditional check).
Docs:
- Bump the MCP tool count 39 -> 40 across all READMEs and AGENTS.md (the
registry now exposes exactly 40 tools).
Refactor:
- SandboxStore.asSink() centralizes the {put,has,evict} sink + uri<->id
mapping; the embedded-MCP and in-app agent-tools wiring sites share it.
Tests:
- security headers (inline vs attachment, nosniff, CSP), 304 Cache-Control,
putAndLink URL form, has()/remove(), asSink() round-trip, getSandboxPublicUrl
(trailing-slash trim + APP_URL fallback), and a stash test where the doc put
itself evicts a mirrored image.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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