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Harden OIDC, add SVG sanitization, improve form UX and security defaults

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Remove PKCE plain method support (S256 only), enforce openid scope requirement,
filter to supported scopes, strip reserved claims from custom claims as
defense-in-depth, sanitize SVG icons with Loofah, add global input padding,
switch session cookies to SameSite=Lax, use Session.active scope, and remove
unsafe-eval from CSP.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This commit is contained in:
Dan Milne
2026-04-06 21:06:51 +10:00
parent c7d9df48b5
commit 2235924f37
11 changed files with 94 additions and 73 deletions
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2
config/initializers/content_security_policy.rb
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@@ -11,7 +11,7 @@ Rails.application.configure do
# Scripts: Allow self, importmaps, unsafe-inline for Turbo/StimulusJS, and blob: for downloads
# Note: unsafe_inline is needed for Stimulus controllers and Turbo navigation
policy.script_src :self, :unsafe_inline, :unsafe_eval, "blob:"
policy.script_src :self, :unsafe_inline, "blob:"
# Styles: Allow self and unsafe_inline for TailwindCSS dynamic classes
# and Stimulus controller style manipulations