plausible/analytics: technical due diligence, read from its repository

The median source file here is 75 lines. 5 files exceed 1,000 lines, the largest being 2,739. Size is not a defect on its own — some problems genuinely live in one place — but these are where merge conflicts, review fatigue and single-owner knowledge concentrate, and they are the first thing that slows an inheriting engineer down.

The suite is configured to retry failing tests (tracker/playwright.config.ts). A retry turns a flaky test green without saying why it failed, so a green build means the tests passed eventually. Ask how many retries a typical run needs, and which tests need them.

The newest release, v3.2.1, is not on the branch this survey read; the newest release on it is v3.1.0. The shipped product may differ from what this report describes. Survey the release branch too.

3 places run a command through a shell (`shell=True`, `os.system`, `exec` with a template) rather than passing arguments. Where any part comes from outside, it is command injection. Ask where each one's input comes from.

14 of 404 locked dependencies match 29 published advisories in OSV, 7 of them rated high or critical. A lockfile says which version is installed, not whether the flawed code is reachable from this product, so each needs a look. Most are fixed by an upgrade, and the advisory names the version. None of the high or critical ones is in what the product ships: only the build reaches them: a bundler, a code generator, a build plugin, or a lockfile in a tooling directory. This lockfile pins development tools alongside what ships and does not say which is which, so some of these may never reach a user.

The root licence changed 1 time(s). The latest terms restrict what users, hosts or a buyer may do in ways the earlier ones did not. Code taken under the old terms stays under them, so both matter in diligence.

The newest was published on 2026-06-03. A project that publishes advisories is telling its users about its fixes, and the count and pace say how much security work it carries. Whether 1 of them are fixed in the code you ship could not be told from this history: its version is only known to be at least 3.1.0. Answer lives in: the release you run, set against each fixed version.

Nothing in the service initialises an error reporter (Sentry, Rollbar, Bugsnag, Honeybadger or an APM agent). An exception in production reaches a person only if someone is reading the logs, which usually means a customer reports it first.