A per-request policy build (forced by the nonce) means a stray semicolon in
a CSP_EXTRA_* value — a plausible operator paste like
"https://youtube.com; https://vimeo.com" — lands inside a single source
token and makes Rails raise InvalidDirectiveError on every request, a
site-wide 500 even in report-only mode. Split on ';' alongside comma and
whitespace so such a value tokenizes into valid sources. Rails still
validates each token, so no injection is introduced (a token with an
embedded space still fails validation).
Campfire is self-hosted per customer: an admin may embed or connect to
external hosts (video/embed providers, image CDNs, analytics, form or
webhook endpoints) that vary per install and are unknown at build time.
Hardcoding these directives at :self would break those integrations once
the policy is enforced.
Read per-install extras from ENV (CSP_EXTRA_SCRIPT_SRC, _STYLE_SRC,
_IMG_SRC, _CONNECT_SRC, _FRAME_SRC, _FORM_ACTION), each a comma- or
whitespace-separated host list, appended to the :self baseline. Unset by
default, so the policy stays at :self only unless an admin opts in.
Layer a Turbo-safe nonce and a full directive set onto the Report-Only
baseline, still without enforcing anything.
The nonce is the HMAC-SHA256 of a stable per-visitor cookie, keyed by
secret_key_base. It stays constant across a session's requests so Turbo
snapshot restores don't replay a stale nonce and trip the policy, while
staying unpredictable to a client that can set the cookie but not the
secret. importmap-rails auto-nonces the importmap JSON and shim, the only
inline scripts the app renders (the message _template is a non-executed
text/template data block).
script-src gains the nonce; style-src keeps unsafe_inline for now (inline
style= attributes across the composer and ActionText content aren't
nonceable yet); img/connect/frame-src start at :self as tuning starting
points for the report-only window. report_only stays true; enforcement is
a later flip.
Campfire ships no CSP today (the initializer is the stock, fully-commented
file). This adds a conservative Report-Only policy — default-src 'self';
object-src 'none'; base-uri/frame-ancestors/form-action 'self' — so browsers
evaluate and report violations without enforcing anything. Rendering and
behavior are unaffected. Next steps: wire a report endpoint, tune against
observed violations, then flip content_security_policy_report_only off to
enforce.
Message content is delivered over turbo streams, which ran on the stock
Turbo::StreamsChannel. That channel verifies the signature on the stream name and
nothing else. The name carries no expiry and no binding to a user, so one read off
the page while a member kept working after the membership was revoked.
Revocation made this worse rather than better. Membership#after_destroy_commit
disconnects the user with reconnect: true, and the client replays its subscriptions
on the new socket: RoomChannel re-checks membership and rejects, while the turbo
subscription re-verified only the signature and was accepted.
RoomMessagesChannel re-checks membership on every subscribe, deriving the room from
the verified stream name so there is no parameter to point elsewhere. Since the
subscriber names the channel it wants, the stock channel would otherwise be a way
around that check, so it now turns these stream names away and this is the only door.
and add test coverage for (un)supported file types.
The avatar and logo variants move into the models and return nil for content
types that are no longer variable, so the controllers fall back to the initials
avatar and stock logo icon instead of raising `ActiveStorage::InvariableError`.
Security fix for 3 stored/DOM XSS advisories in Trix:
GHSA-g9jg-w8vm-g96v (attachment attribute), GHSA-qmpg-8xg6-ph5q
(serialized attributes), GHSA-53p3-c7vp-4mcc (JSON deserialization
bypass in drag-and-drop).
EXPOSED: campfire's composer/editor use Trix for message bodies, and the
browser actually ran the hand-vendored vendor/javascript/trix.esm.min.js
pinned at 2.0.10 — which lacks the DOMPurify/isValidAttribute sanitizers.
The gem bump alone is a no-op for the browser; the real fix is
re-vendoring the ESM build:
- bump gem to 2.1.19 (Gemfile.lock)
- re-vendor vendor/javascript/trix.esm.min.js from Trix 2.1.19
(2.0.10 → 2.1.19; bundles DOMPurify 3.4.2, rangy 1.3.2)
- update importmap pin comment @2.0.10 → @2.1.19
89 commits analyzed. Verified green via full unit + system suites
(system tests drive the Trix composer via fill_in_rich_text_area).
https://github.com/basecamp/37signals-hq/blob/main/upgrade-analysis/campfire-20260609-action_text-trix_v2.1.15..v2.1.19.md🤖 Assisted by Claude
* Add GitHub Actions audit job (actionlint + zizmor) to CI
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
* Configure dependabot for GitHub Actions, bundler, and Docker
Batches all action updates into a single weekly PR. Adds cooldown
periods to all ecosystems.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
* Add local GitHub Actions linting (actionlint + zizmor) to bin/setup and bin/ci
Install actionlint, shellcheck, and zizmor in bin/setup. Run both
linters as CI steps in config/ci.rb alongside existing style checks.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
* Pin all GitHub Actions to SHA hashes
Run pinact to pin action versions to specific commit SHAs,
preventing supply chain attacks from tag mutation.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
* Fix high severity zizmor findings
- Suppress unpinned-images for redis service containers (digest
pinning is nontrivial for service containers)
- Move workflow-level permissions to job-level in publish-image.yml
(build gets full set, manifest gets only what it needs)
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
* Fix medium severity zizmor findings
- Add persist-credentials: false to all checkout steps
- Add permissions: {} at workflow level in ci.yml
- Add job-level permissions (contents: read) to all CI jobs
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
* Fix informational template-injection findings in publish-image.yml
Move steps.meta.outputs.tags from inline ${{ }} expressions to env
vars in both the manifest creation and cosign signing steps.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
* Update brakeman to 8.0.4
bin/brakeman uses --ensure-latest which fails if not on the newest version.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
---------
Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Previously we had to use structure.sql since schema.rb didn't have support for virtual tables that we needed for search. Since Campfire's release virtuals tables have been added to Rails, so there is no need to use structure.sql anymore
This adds the ability to ban a user by their IP address.
When an admin is viewing a user profile, a new "Ban user" button is
present. Clicking on that will:
- Create a ban on the IP addresses that were tracked for that user's
sessions
- Remove all the messages authored by that user
- Log the user out immediately
In addition, that user will no longer be shown in most user lists in the
app. They are still shown to admins, in account settings. Viewing their
profile from there will now show a "Remove ban" button which can be used
to restore their access (it doesn't restore their messages though --
those are already gone -- it just removes the blocks so they can log in
again).
* Bump Ruby to 3.4.5
* Update dependencies
* Adjust for Rails 8 and Ruby 3.5 API changes
* Mark params strings as mutable in prepapration for frozen strings in Ruby 3.5
* Update test for HTML5 sanitizer
With Rails 7.1 the HTML5 sanitizer became the default, this breakts this test because the old sanitizer used to delete unpermitted nodes, while the new one returns their content
The final string is safe, but different then it used to be in Rails 7.0
* Remove direct Turbo tesh helpers require & parallelize tests
* Fix Zeitwerk issues with rails extensions
* Update Resque setup for Redis 5+
* Remove unused views
* Remove GID v1 handler
Jeremy Daer
Stanko K.R.
Mike Dalessio
Kevin McConnell