HTTP Security Header Not Detected

We use Qualys for vulnerability scanning and getting “HTTP Security Header Not Detected.”

Very familiar with how to remediate this on Windows IIS and NGINX servers but portainer is not running on proxy.

Has anyone else delt with adding security headers to portainer?

THREAT:

This QID reports the absence of the following HTTP headers according to CWE-693: Protection Mechanism Failure:
X-Frame-Options: This HTTP response header improves the protection of web applications against clickjacking attacks. Clickjacking, also known as a “UI redress attack”, allows an attacker to use multiple transparent or opaque layers to trick a targeted user into clicking on a button or link on another page when they were intending to click on the the top level page.
X-XSS-Protection: This HTTP header enables the browser built-in Cross-Site Scripting (XSS) filter to prevent cross-site scripting attacks. X-XSS-Protection: 0; disables this functionality.
X-Content-Type-Options: This HTTP header prevents attacks based on MIME-type mismatch. The only possible value is nosniff. If your server returns X-Content-Type-Options: nosniff in the response, the browser will refuse to load the styles and scripts in case they have an incorrect MIME-type.
Strict-Transport-Security: The HTTP Strict-Transport-Security response header (HSTS) is a security feature that lets a web site tell browsers that it should only be communicated with using HTTPS, instead of using HTTP.

QID Detection Logic:
This unauthenticated QID looks for the presence of the following HTTP responses:
Valid directives for X-Frame-Options are:
X-Frame-Options: DENY - The page cannot be displayed in a frame, regardless of the site attempting to do so.
X-Frame-Options: SAMEORIGIN - The page can only be displayed in a frame on the same origin as the page itself.
X-Frame-Options: ALLOW-FROM RESOURCE-URL - The page can only be displayed in a frame on the specified origin.

Valid directives for X-XSS-Protections are:
X-XSS-Protection: 1 - Enables XSS filtering (usually default in browsers). If a cross-site scripting attack is detected, the browser will sanitize the page (remove the unsafe parts).
X-XSS-Protection: 1; mode=block - Enables XSS filtering. Rather than sanitizing the page, the browser will prevent rendering of the page if an attack is detected.
X-XSS-Protection: 1; report=URI - Enables XSS filtering. If a cross-site scripting attack is detected, the browser will sanitize the page and report the violation. This uses the functionality of the CSP report-uri directive to send a report.
X-XSS-Protection: 0 disables this directive and hence is also treated as not detected.

A valid directive for X-Content-Type-Options: nosniff

A valid HSTS directive Strict-Transport-Security: max-age=; [; includeSubDomains][; preload]