CVE-2023-29197

CVE-2023-29197 affects guzzlehttp/psr7 (PHP). Root cause: improper header parsing that allows a newline character in header names/values, bypassing termination assumptions and enabling potential information disclosure or authorization bypass as described in the advisory chain. Affected releases r...

CVE-2022-24775

CVE-2022-24775 affects guzzlehttp/psr7 (PHP PSR-7 HTTP message library). Affected versions before 1.8.4 and 2.1.1 are vulnerable to improper header parsing, allowing an attacker to inject newline characters into header names/values. The issue is patched in 1.8.4 and 2.1.1. A follow-up vulnerabili...

CVE-2023-29530

Laminas Diactoros HTTP message implementations are affected in versions up to 2.25.0 by an issue where a leading/trailing newline in a header key or value can produce an invalid HTTP message, potentially enabling DoS or application errors. Patches are available in 2.18.1, 2.19.1, 2.20.1, 2.21.1, ...

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...

CVE-2026-49214

CVE-2026-49214 affects guzzlehttp/psr7 up to version 2.10.1. Versions prior to 2.10.2 do not reject ASCII control characters/whitespace/DEL in URI host components. If a user-controlled URL is used to build a PSR-7 Uri/Request and the host contains CRLF or similar, the host may be copied into the ...

CVE-2026-55766

Summary (CVE-2026-55766): guzzlehttp/psr7 (PHP) before 2.12.1 is vulnerable to CRLF injection in the HTTP start-line fields (method, protocol version, reason phrase) when attacker-controlled data ends up in those fields and the message is serialized or forwarded. The flaw requires the malformed m...