HTTP/2: validate Host vs :authority#622
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arturobernalg merged 1 commit intoapache:masterfrom Feb 17, 2026
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| final URIAuthority hostAuthority; |
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“A server SHOULD treat a request as malformed if it contains a Host header field … that differs … from the … ":authority" pseudo-header field"
@arturobernalg I read this if "differs at all". I would just do a text comparison without parsing the values.
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Clients MUST NOT generate a request with a Host header field that differs from the ":authority" pseudo-header field.”
“A server SHOULD treat a request as malformed if it contains a Host header field … that differs … from the … ":authority" pseudo-header field
https://datatracker.ietf.org/doc/html/rfc9113#name-request-pseudo-header-field