GHSA-34XG-WGJX-8XPH guzzlehttp/psr7 has Host Confusion via Authority Reinterpretation

Impact guzzlehttp/psr7 improperly interpreted malformed Host header values when constructing request URIs from inbound request data. This issue concerns inbound request parsing and server request construction. It does not require serializing a PSR-7 request, and it is not part of the normal...

CVE-2026-48998 guzzlehttp/psr7 has Host Confusion via Authority Reinterpretation

guzzlehttp/psr7 is a PSR-7 HTTP message library implementation in PHP. Versions prior to 2.10.2 contain improper Host header validation when parsing raw HTTP request messages and when deriving a server request URI from server variables. An attacker can provide a malformed Host header containing U...

CVE-2026-48998 guzzlehttp/psr7 has Host Confusion via Authority Reinterpretation

guzzlehttp/psr7 is a PSR-7 HTTP message library implementation in PHP. Versions prior to 2.10.2 contain improper Host header validation when parsing raw HTTP request messages and when deriving a server request URI from server variables. An attacker can provide a malformed Host header containing U...

CVE-2026-48998

GuzzleHttp/psr7 (PHP) before version 2.10.2 is affected by improper Host header validation when parsing raw HTTP requests or deriving a server request URI from server variables. An attacker can supply a Host header containing URI delimiters (for example [email protected]) that can be r...