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Improve security headers based on headers.dev analysis #70

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Improve security headers based on headers.dev analysis #70

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Improve security headers based on headers.dev analysis
kimpepper Apr 8, 2026
baeb24b
Update tests: replace Feature-Policy with Permissions-Policy, add new…
kimpepper Apr 8, 2026
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4 changes: 4 additions & 0 deletions base/etc/nginx/conf.d/header/cross-origin-opener-policy.conf
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@@ -0,0 +1,4 @@
# Cross-Origin-Opener-Policy prevents other origins from gaining a reference to this window.
# same-origin-allow-popups is used to preserve OAuth and payment popup flows.
# https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Cross-Origin-Opener-Policy
add_header Cross-Origin-Opener-Policy "same-origin-allow-popups" always;
4 changes: 4 additions & 0 deletions base/etc/nginx/conf.d/header/cross-origin-resource-policy.conf
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# Cross-Origin-Resource-Policy controls which origins can include this resource.
# same-site allows subdomains on the same site (e.g. CDN serving from same eTLD+1).
# https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Cross-Origin-Resource-Policy
add_header Cross-Origin-Resource-Policy "same-site" always;
7 changes: 4 additions & 3 deletions base/etc/nginx/conf.d/header/feature.conf
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@@ -1,3 +1,4 @@
# Feature Policy will allow a site to enable or disable certain browser features and APIs in the interest of better security and privacy.
# https://scotthelme.co.uk/a-new-security-header-feature-policy
add_header Feature-Policy "geolocation 'none'; midi 'none'; notifications 'none'; push 'none'; microphone 'none'; camera 'none'; magnetometer 'none'; gyroscope 'none'; speaker 'self'; vibrate 'none'; fullscreen 'self'; payment 'none';" always;
# Permissions-Policy controls which browser features and APIs are available to the page.
# Replaces the deprecated Feature-Policy header.
# https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Permissions-Policy
add_header Permissions-Policy "geolocation=(), midi=(), notifications=(), push=(), microphone=(), camera=(), magnetometer=(), gyroscope=(), speaker=(self), vibrate=(), fullscreen=(self), payment=()" always;
3 changes: 3 additions & 0 deletions base/etc/nginx/conf.d/header/x-permitted-cross-domain-policies.conf
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# X-Permitted-Cross-Domain-Policies restricts Adobe Flash and PDF cross-domain data requests.
# https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/X-Permitted-Cross-Domain-Policies
add_header X-Permitted-Cross-Domain-Policies "none" always;
2 changes: 1 addition & 1 deletion base/etc/nginx/conf.d/location/10-error-pages.conf
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Expand Up @@ -2,7 +2,7 @@ location /error-pages/ {
alias /etc/nginx/error-pages/;

# Prevent scripts getting into our sub_filter.
add_header Content-Security-Policy "script-src 'none';";
add_header Content-Security-Policy "script-src 'none'; base-uri 'none'; upgrade-insecure-requests;";

add_header X-Trace-ID $request_id;

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15 changes: 12 additions & 3 deletions drupal/tests/test.go
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Expand Up @@ -23,9 +23,18 @@ func main() {
// Test for header: Referrer-Policy.
hasResponseHeader("http://127.0.0.1:8080", "Referrer-Policy"),
hasResponseHeader("http://127.0.0.1:8080/index.PHP", "Referrer-Policy"),
// Test for header: Feature-Policy.
hasResponseHeader("http://127.0.0.1:8080", "Feature-Policy"),
hasResponseHeader("http://127.0.0.1:8080/index.PHP", "Feature-Policy"),
// Test for header: Permissions-Policy.
hasResponseHeader("http://127.0.0.1:8080", "Permissions-Policy"),
hasResponseHeader("http://127.0.0.1:8080/index.PHP", "Permissions-Policy"),
// Test for header: Cross-Origin-Opener-Policy.
hasResponseHeader("http://127.0.0.1:8080", "Cross-Origin-Opener-Policy"),
hasResponseHeader("http://127.0.0.1:8080/index.PHP", "Cross-Origin-Opener-Policy"),
// Test for header: Cross-Origin-Resource-Policy.
hasResponseHeader("http://127.0.0.1:8080", "Cross-Origin-Resource-Policy"),
hasResponseHeader("http://127.0.0.1:8080/index.PHP", "Cross-Origin-Resource-Policy"),
// Test for header: X-Permitted-Cross-Domain-Policies.
hasResponseHeader("http://127.0.0.1:8080", "X-Permitted-Cross-Domain-Policies"),
hasResponseHeader("http://127.0.0.1:8080/index.PHP", "X-Permitted-Cross-Domain-Policies"),
// Test for header: Strict-Transport-Security.
hasResponseHeader("http://127.0.0.1:8080", "Strict-Transport-Security"),
hasResponseHeader("http://127.0.0.1:8080/foo", "Strict-Transport-Security"),
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