Dmitry VerkhoturovandGitHub 2640aaee9e Reach what http cannot: the widget over TLS, embedded cross-origin (#2214)
Every service in the suite spoke http, and the browser gates a whole class
of behaviour on the page protocol: Secure cookies, SameSite=None,
Partitioned, and any code reading location.protocol. None of it was
executed, which is how setAuthCookie came to decorate its cookies with
__Host- on https pages and survive for years.

A TLS pair joins the stack: remark42 with SSL_TYPE=static on 8443, and an
nginx serving a host page on its own name on 8444, both on a self-signed
certificate that e2e/tls/generate.sh makes and .gitignore keeps out. Every
context accepts it, and so does the readiness client, since those are the
only servers either talks to. The instance also runs with
AUTH_SEND_JWT_HEADER, which is what makes the widget write cookies of its
own: without it the client-side writer never runs on any https page here
and every assertion about the attributes it chooses is vacuous.

Three cases. Signing in across origins and then reloading, which is the one
the http cross-origin case cannot make: the widget holds its token in
memory for the life of a page, so signing in and posting says nothing about
persistence and only the reload asks whether the cookie was delivered,
stored under a name the backend reads and sent back from a third-party
frame. The cookies themselves, read out of the browser store while the
widget is embedded elsewhere, since a cookie the browser refused is absent
from that list entirely and one it kept but will not send is worse than
useless: every copy of both names has to be Secure and SameSite=None, at
least one has to be partitioned, and none may carry a __Host- prefix
nothing on either side reads. And the same reload under a browser that
blocks third-party cookies, which the widget's own partitioned pair is the
only reason to survive.

That last one needs a browser playwright does not offer: its default
arguments disable ThirdPartyStoragePartitioning outright, so a run
configured wrongly keeps every third-party cookie and the case would pass
while asserting nothing. IgnoreDefaultArgs drops that list and re-supplies
it without the one feature, and a control cookie set from inside the frame
has to be refused before anything else is read, so a playwright release
that changes the list fails as itself instead of going quietly vacuous.

All three pass against master. What TLS still cannot reach, the OAuth popup
above all, is written down in the README.
2026-08-23 14:58:23 -05:00
2021-08-09 11:08:42 -05:00
2026-04-16 23:10:05 -05:00

Remark42 Build Status Image Size Go Report Card Coverage Status codecov

Remark42 is a self-hosted, lightweight and simple (yet functional) comment engine, which doesn't spy on users. It can be embedded into blogs, articles, or any other place where readers add comments.

  • Social login via Google, Facebook, Microsoft, GitHub, Apple, Yandex, Patreon, Discord, Telegram and custom OAuth2 providers
  • Login via email
  • Optional anonymous access
  • Multi-level nested comments with both tree and plain presentations
  • Import from Disqus and WordPress
  • Markdown support with friendly formatter toolbar
  • Moderator can remove comments and block users
  • Voting, pinning and verification system
  • Sortable comments
  • Images upload with drag-and-drop
  • Extractor for recent comments, cross-post
  • RSS for all comments and each post
  • Telegram, Slack, Webhook and email notifications for Admins (get notified for each new comment)
  • Email and Telegram notifications for users (get notified when someone responds to your comment)
  • Export data to JSON with automatic backups
  • No external databases, everything embedded in a single data file
  • Fully dockerized and can be deployed in a single command
  • Self-contained executable can be deployed directly to Linux, Windows and macOS
  • Clean, lightweight and customizable UI with white and dark themes
  • Multi-site mode from a single instance
  • Integration with automatic SSL (direct and via nginx-le)
  • Privacy focused

Demo site available with all authentication methods, including email auth and anonymous access.

Screenshots

Comments example:

For admin screenshots see Admin UI documentation

All remark42 documentation is available by the link.

Contribution

In order to start and work on the project locally in development mode check our contribution documentation for backend and frontend.

If you are interested in adding a new localization please check these docs.

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