security: remediate all P0-P2 audit findings (12 tasks)

P0 fixes:
- WebSocket origin checking (reject untrusted origins)
- WS session token moved from URL query param to first message frame
- WebAuthn login cookie now uses Secure flag via shared SetSessionCookie
- PostgreSQL sslmode configurable via POSTGRES_SSLMODE env (default: require)
- Fixed DatabaseDSN to use real password instead of masked placeholder

P1 fixes:
- Per-IP rate limiting middleware (auth: 5 req/s, invites: 2 req/s)
- Security headers on all responses (CSP, X-Frame-Options, nosniff, etc.)
- WS broadcasts scoped to server members (prevents cross-server data leak)
- Webhook tokens stored as SHA-256 hashes (not plaintext)

P2 fixes:
- CSRF protection via Origin header validation on state-changing requests
- MANAGE_CHANNELS permission enforced on channel update/delete
- Upload validation: 25MB limit, extension allowlist, server-side MIME check
- File serve: path traversal protection + Content-Disposition: attachment

Files: 23 changed, +499/-100. Builds clean (go build, go vet, npm build).
Zero CVEs (govulncheck, npm audit).
This commit is contained in:
2026-06-29 09:30:50 -04:00
parent 5373105368
commit 130187c7be
23 changed files with 504 additions and 105 deletions
+4 -4
View File
@@ -114,7 +114,7 @@ func (h *Handler) requireMessageAccess(w http.ResponseWriter, r *http.Request, m
// @Router /messages/{messageID}/reactions [post]
func (h *Handler) Add(w http.ResponseWriter, r *http.Request) {
messageID := chi.URLParam(r, "messageID")
userID, channelID, _, ok := h.requireMessageAccess(w, r, messageID)
userID, channelID, serverID, ok := h.requireMessageAccess(w, r, messageID)
if !ok {
return
}
@@ -145,7 +145,7 @@ func (h *Handler) Add(w http.ResponseWriter, r *http.Request) {
}
reaction.CreatedAt = createdAt.String
h.hub.BroadcastEvent(gateway.Event{
h.hub.BroadcastToServer(serverID, gateway.Event{
Type: gateway.EventReactionAdd,
Data: map[string]interface{}{
"reaction": reaction,
@@ -173,7 +173,7 @@ func (h *Handler) Add(w http.ResponseWriter, r *http.Request) {
func (h *Handler) Remove(w http.ResponseWriter, r *http.Request) {
messageID := chi.URLParam(r, "messageID")
emoji := chi.URLParam(r, "emoji")
userID, channelID, _, ok := h.requireMessageAccess(w, r, messageID)
userID, channelID, serverID, ok := h.requireMessageAccess(w, r, messageID)
if !ok {
return
}
@@ -196,7 +196,7 @@ func (h *Handler) Remove(w http.ResponseWriter, r *http.Request) {
return
}
h.hub.BroadcastEvent(gateway.Event{
h.hub.BroadcastToServer(serverID, gateway.Event{
Type: gateway.EventReactionRemove,
Data: map[string]interface{}{
"user_id": userID,