Cross-site Referrer Leakage through usage of the origin keyword in Referrer-Policy
Summary#
Invicti detected that origin leakage is possible due to the usage of origin in the Referrer-Policy implementation.
If a comma-separated referrer-policy is specified in the header, fallback policy is used only if the browser does not support the set referrer-policy, which may cause Cross-site Referrer Leakage.
Impact#
Origin (Domain) information can be leaked through the Referer header, if a request occurs to a site from this site.
Remediation#
If leakage of the origin is a problem for the site, see all available options by using links in External References and use a secure one.
Classifications#
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