Security Report Summary
A
Site: https://www.kayak.de/
IP Address: 199.232.25.29
Report Time: 28 Oct 2026 01:20:07 UTC
Headers:
  • Strict-Transport-Security
  • Permissions-Policy
  • Referrer-Policy
  • X-Content-Type-Options
  • Content-Security-Policy
  • X-Frame-Options
Warning: Grade capped at A, please see warnings below.
Advanced:
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Warnings
Referrer-PolicyThe "origin-when-cross-origin" value is not recommended.
Raw Headers
HTTP/2200
content-encodinggzip
x-render-time0.205
strict-transport-securitymax-age=10886400; preload
permissions-policycamera=(), microphone=(self), midi=(), geolocation=(self), usb=()
x-r9-mst-reqT1rxWQds0ieDA
x-xss-protection1; mode=block
referrer-policyorigin-when-cross-origin
report-to{ "group": "csp-log", "max_age": 43200, "endpoints": [ { "url": "https://www.kayak.com/s/run/cspreport/reportHttp" } ] }
x-content-type-optionsnosniff
content-security-policyupgrade-insecure-requests; frame-ancestors 'self'; object-src 'none'; base-uri 'self' *.cloudfront.net
set-cookiep1.med.token=; Expires=Thu, 01 Jan 1970 00:00:10 GMT; Path=/
set-cookieApache=Iv5toA-AAABoYAX0yI-07-VZyqdw; Max-Age=86400000; Expires=Tue, 24 Jul 2029 01:20:07 GMT; Path=/; Secure; HTTPOnly; SameSite=None
set-cookiecluster=5; Max-Age=2700; Expires=Wed, 28 Oct 2026 02:05:07 GMT; Path=/; Secure; HTTPOnly; SameSite=None
set-cookiep1.med.sid=R-5qf1YnKC3lVtaPmlsYxU8-8aTR2RAcKhbESjmIAqEtRAbNYI58tKeJVTqTnOafP; Path=/; Secure; HTTPOnly; SameSite=None
set-cookiekayak.t=oJteQw$unM8UZ0_t5y73; Path=/; Secure; HTTPOnly; SameSite=None
set-cookiekayak.mc=Adq4uZ20SBCYUPnGqhnQGut-O4MFndP8JeHPna_w4rpPcWKzqbzAp_w3FWsiblb26CMCiwVxN8tTC8lmLYd2KKmpQRTO83g5y_fWYVD8IYTn_EpsrX_jm0RS4LXOn0vPql6qhWMuzfbH2mc4fjM3pxd7clYyN9hxGoydXUX77KOe; Path=/; Secure; HTTPOnly; SameSite=None
set-cookiemst_iBfK2w=x-uSiNJbmJzJ5yfQYbdFBc0cWvwecHVJi5OIwkH6f1ygqeHzFAZ_GUtyAjZwac4Vlh8IZRAvcWdbXFtbP40PYg; Expires=Wed, 28 Oct 2026 01:35:07 GMT; Max-Age=900; Path=/; HttpOnly
set-cookiemst_client=AS-0MKrs0uFhpPozKpmFss5-77upNrJQ9GDw44ejqKl57V2gfDopSD4aRb3IiWE2LqFAizNqPBxfvNhf9p9HYrY; Path=/; HttpOnly
set-cookiemst_ADIrlA=MqlpGzYtYM972S3QGbZlWs0cWvwecHVJi5OIwkH6f1xdxH7v8rgNHFxIn1kHufcpI63dx31XRr0E4ms1HABQFA; Expires=Wed, 28 Oct 2026 01:35:07 GMT; Max-Age=900; Path=/; HttpOnly
x-sn-waf-code
dnt1
content-languagede-DE
serverKAYAK/1.0
content-security-policy-report-onlyupgrade-insecure-requests; object-src 'none'; script-src 'self' 'unsafe-inline' 'wasm-unsafe-eval' 'report-sample' *.r9cdn.net https://*.googlesyndication.com https://*.doubleclick.net https://*.adtrafficquality.google https://fundingchoicesmessages.google.com https://accounts.google.com https://*.fullstory.com https://appleid.cdn-apple.com https://connect.facebook.net *.affirm.com *.affirm.ca https://www.googletagmanager.com https://talkdeskchatsdk.talkdeskapp.com https://*.map.naver.com https://nrbe.pstatic.net https://widget.trustpilot.com https://static.criteo.net chrome-extension: https://www.google-analytics.com moz-extension: safari-extension: safari-web-extension: https://asset.trueengage.com https://evt2.klarna.app https://apis.google.com https://*.g.doubleclick.net https://*.cdn4.forter.com https://*.gstatic.com *.forter.com https://*.cloudfront.net https://*.usabilla.com https://*.googleapis.com https://www.googletagservices.com https://content.r9cdn.net; worker-src blob: chrome-extension: moz-extension: safari-extension: safari-web-extension:; form-action 'self'; base-uri 'self' *.cloudfront.net; report-uri /s/run/cspreport/omni
x-r9-mst-targetsparkle
content-typetext/html;charset=UTF-8
accept-rangesbytes
dateWed, 28 Oct 2026 01:20:07 GMT
via1.1 varnish
x-served-byr9, cache-dub4374-DUB, cache-dub4374-DUB
x-cacheMISS, MISS
x-cache-hits0, 0
x-timerS1793150407.360959,VS0,VE338
varyAccept-Encoding
set-cookiecsid=8d408253-bc98-4217-9b03-f19d768d9211; path=/; Secure; SameSite=Strict;
cache-controlprivate, no-store
X-Frame-OptionsHeader not set, see Additional Information below.
Upcoming Headers
Cross-Origin-Embedder-PolicyCross-Origin Embedder Policy allows a site to prevent assets being loaded that do not grant permission to load them via CORS or CORP.
Cross-Origin-Opener-PolicyCross-Origin Opener Policy allows a site to opt-in to Cross-Origin Isolation in the browser.
Cross-Origin-Resource-PolicyCross-Origin Resource Policy allows a resource owner to specify who can load the resource.
Additional Information
strict-transport-securityHTTP Strict Transport Security is an excellent feature to support on your site and strengthens your implementation of TLS by getting the User Agent to enforce the use of HTTPS.
permissions-policyPermissions Policy is a new header that allows a site to control which features and APIs can be used in the browser.
x-xss-protectionX-XSS-Protection sets the configuration for the XSS Auditor built into older browsers. The recommended value was "X-XSS-Protection: 1; mode=block" but you should now look at Content Security Policy instead.
referrer-policyReferrer Policy is a new header that allows a site to control how much information the browser includes with navigations away from a document and should be set by all sites.
report-toReport-To enables the Reporting API. This allows a website to collect reports from the browser about various errors that may occur. You can sign up for a free account on Report URI to collect these reports.
x-content-type-optionsX-Content-Type-Options stops a browser from trying to MIME-sniff the content type and forces it to stick with the declared content-type. The only valid value for this header is "X-Content-Type-Options: nosniff".
content-security-policyContent Security Policy is an effective measure to protect your site from XSS attacks. By whitelisting sources of approved content, you can prevent the browser from loading malicious assets. Analyse this policy in more detail. You can sign up for a free account on Report URI to collect reports about problems on your site.
serverServer value has been changed. Typically you will see values like "Microsoft-IIS/8.0" or "nginx 1.7.2".
content-security-policy-report-onlyContent Security Policy Report Only is used to test a Content Security Policy before making it live. The browser will report on actions that would have been taken based on the policy. Analyse this policy in more detail. You can sign up for a free account on Report URI to collect reports about problems on your site.
X-Frame-OptionsThe XFO header was not sent but frame-ancestors in Content Security Policy was used instead.