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VaultDevLabs
Evidence guide

WordPress security headers missing

A practical checklist for missing WordPress security headers and what they do and do not prove.

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Evidence before edits
No automatic changes
Clear next action
Decision map

01 · Observed signal

Security headers help browsers enforce safer behavior around framing, MIME handling, referrer sharing, transport security, and permissions. WordPress sites often miss them because headers live in hosting, CDN, or server config rather than content.

02 · Evidence to inspect

Review Strict-Transport-Security, X-Frame-Options or CSP frame rules, X-Content-Type-Options, Referrer-Policy, and Permissions-Policy.

03 · Safe next move

Run the free diagnostic to collect evidence before changing live orders or payment settings.

Start here

Understand the problem before changing the system.

Security headers help browsers enforce safer behavior around framing, MIME handling, referrer sharing, transport security, and permissions. WordPress sites often miss them because headers live in hosting, CDN, or server config rather than content.

Possible causes

What may have interrupted the expected path.

  • Headers are not configured at the host, CDN, or web server layer.
  • A migration changed server config and removed previous hardening rules.
  • Plugins add partial headers but leave gaps or conflicting policies.
  • Strict policies were avoided because checkout, embeds, or third-party scripts were not tested.

Evidence checks

What to verify first.

  • Review Strict-Transport-Security, X-Frame-Options or CSP frame rules, X-Content-Type-Options, Referrer-Policy, and Permissions-Policy.
  • Confirm headers do not break checkout, payment redirects, analytics, or embedded services.
  • Add policies in the correct layer: CDN, host, server config, or a trusted hardening plugin.
  • Retest key pages after changes, especially checkout and account flows.

Decision path

Move from signal to evidence to action.

Use the smallest safe step that resolves uncertainty. Implementation comes after the evidence is clear.

  1. 01Run the free diagnostic to collect evidence before changing live orders or payment settings.
  2. 02Request a Payment Rescue Review if the evidence is unclear or the risk affects customers, fulfilment, or support.
  3. 03Custom setup or fix work is quoted after review, once the likely cause and scope are clear.

Quick answer

What does this usually mean?

Security headers help browsers enforce safer behavior around framing, MIME handling, referrer sharing, transport security, and permissions. WordPress sites often miss them because headers live in hosting, CDN, or server config rather than content.

First check

What should be checked first?

Review Strict-Transport-Security, X-Frame-Options or CSP frame rules, X-Content-Type-Options, Referrer-Policy, and Permissions-Policy.

Need a human decision?

Check the evidence before changing a live system.

Missing headers are useful diagnostic signals, but the stronger buyer path is an authorised Security Snapshot when you need evidence, practical fixes, limitations and retest proof across the public surface.

View Security SnapshotRequest scope approval