Invoice Ninja security hardening should focus on environment secret handling, session control, update path protection, and proxy trust settings.
Invoice Ninja runs on Laravel and relies on .env secrets.
Hardening actions:
- generate unique strong
APP_KEY
- never reuse sample/default keys
- restrict filesystem access to
.env
- rotate compromised keys and integration credentials immediately
¶ 2) Secure update and command endpoints
Invoice Ninja docs include security options like UPDATE_SECRET and subscription secrets.
- set
UPDATE_SECRET and do not expose update routes without secrets
- set
SUBSCRIPTION_SECRET for signed subscription notifications
- disable/limit remote command-style paths where not needed
¶ 3) Session and authentication policy
Invoice Ninja supports configurable auto-logout/session behavior.
- set strict
AUTO_LOGOUT_SECONDS
- keep long-lived sessions disabled unless required
- enforce strong admin credentials and role separation
- monitor admin login anomalies
¶ 4) Reverse proxy and network trust
Docs include TRUSTED_PROXIES settings.
- explicitly set trusted proxy CIDRs
- enforce HTTPS and secure headers
- do not expose DB and internal services publicly
- protect webhook endpoints with shared secrets/signature checks
- enable lock controls for sent invoices (
LOCK_SENT_INVOICES) where policy requires immutability
- back up DB + documents + env metadata and test restore
- keep current on project releases and security advisories
- Invoice Ninja Configure Docs (Security/Proxy settings): https://invoice-ninja.readthedocs.io/en/latest/configure.html
- Invoice Ninja GitHub repository (security reporting): https://github.com/invoiceninja/invoiceninja
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