Skip to main content

Insecure or unset HTTP headers - Referrer-Policy

Description#

The server is missing the Referrer-Policy HTTP header. Alternatively, the header's configuration is unsafe.

Impact#

Leak website domain and path to external services.

Recommendation#

Set the Referrer-Policy header to no-referrer, same-origin, strict-origin, or strict-origin-when-cross-origin in the server responses.

Threat#

Unauthorized attacker from Internet.

Score#

Default score using CVSS 3.1. It may change depending on the context of the vulnerability.

Base#

  • Attack vector: N
  • Attack complexity: H
  • Privileges required: N
  • User interaction: N
  • Scope: U
  • Confidentiality: L
  • Integrity: N
  • Availability: N

Temporal#

  • Exploit code madurity: P
  • Remediation level: O
  • Report confidence: C

Result#

  • Vector string: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N/E:P/RL:O/RC:C
  • Score:
    • Base: 3.7
    • Temporal: 3.4
  • Severity:
    • Base: Low
    • Temporal: Low

Requirements#