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fix(csp): allow regional Cognito IdP host so silent token refresh isn't blocked #329

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Merged
gpascucci merged 1 commit into from
Aug 20, 2026
Merged

fix(csp): allow regional Cognito IdP host so silent token refresh isn't blocked #329

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6 changes: 5 additions & 1 deletion frontend/Caddyfile
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Original file line number Diff line number Diff line change
Expand Up @@ -41,6 +41,10 @@
Cache-Control "no-store, no-cache, must-revalidate, proxy-revalidate"
X-Content-Type-Options "nosniff"
Strict-Transport-Security "max-age=31536000"
# connect-src must include the regional Cognito IdP host (cognito-idp.<region>.amazonaws.com):
# Amplify calls it for SILENT TOKEN REFRESH. Without it the browser blocks the refresh, the
# access/id token expires at its TTL, the next request 401s and the user is signed out
# mid-session. The Hosted UI domain below only covers the OAuth login redirect, not refresh.
Content-Security-Policy "default-src 'self' https://*.gov.bc.ca;
script-src 'self' https://*.gov.bc.ca;
style-src 'self' https://fonts.googleapis.com https://use.fontawesome.com 'unsafe-inline';
Expand All @@ -49,7 +53,7 @@
frame-ancestors 'self';
form-action 'self';
block-all-mixed-content;
connect-src 'self' https://*.gov.bc.ca wss://*.gov.bc.ca https://{$COGNITO_DOMAIN:lza-prod-fam-user-pool-domain.auth.ca-central-1.amazoncognito.com};"
connect-src 'self' https://*.gov.bc.ca wss://*.gov.bc.ca https://{$COGNITO_DOMAIN:lza-prod-fam-user-pool-domain.auth.ca-central-1.amazoncognito.com} https://cognito-idp.{$COGNITO_REGION:ca-central-1}.amazonaws.com;"

@paulushcgcj paulushcgcj Aug 20, 2026

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This keeps the existing Hosted UI allow-list entry and adds the regional Cognito IdP host alongside it, which matches the two separate Amplify flows described in the PR. The defaulted region placeholder also avoids requiring a deployment change for the current FAM environments while leaving an explicit override when needed.

Referrer-Policy "same-origin"
Permissions-Policy "fullscreen=(self), camera=(), microphone=()"
Cross-Origin-Resource-Policy "same-origin"
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