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X-Powered-By header not exposed

SEC_X_POWERED_BY_ABSENT

X-Powered-By advertises your framework and often its version, handing an attacker a shortlist of applicable CVEs for free.

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How this rule is weighted

Importance
3 / 10
How much this matters relative to other rules.
Confidence
SPECIFICATION
A standard says so: HTML, WCAG, an RFC or Google's own documentation.
Severity
info
How the finding is presented when it fails.
Scoring
Counts
A failure costs points in its category.

Impact is importance multiplied by the confidence tier’s weight — SPECIFICATION 1.0, RESEARCH 0.7, EMERGING 0.3, EXPERIMENTAL 0.1. Two rules backed by the same class of evidence therefore always carry the same weight, which is what makes the score reproducible rather than hand-tuned.

Questions about this rule

Does SEC_X_POWERED_BY_ABSENT affect my score?
Yes. It is an importance 3 rule at SPECIFICATION confidence, so a failure costs 3 × 1 points of impact in the Security category before that category is normalised to 100.
What does SPECIFICATION confidence mean?
A standard says so: HTML, WCAG, an RFC or Google's own documentation. Confidence is a declared tier rather than a per-rule number, so every rule backed by the same class of evidence carries the same weight - which is what makes the score reproducible instead of hand-tuned.
How do I check SEC_X_POWERED_BY_ABSENT on my own site?
Paste your URL into the box above and it runs only this rule, usually in a couple of seconds. It is also included in the Security checker and in a full scan.

Tags

  • security
  • information-disclosure

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