guzzlehttp/psr7 vulnerabilities

Browse known CVEs and advisories by package and ecosystem. Severity tells you the worst case. What determines real risk is whether the vulnerable code actually runs in your applications.

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CVE-IDSeverityPackage summary

CVE-2026-55766Mediumguzzlehttp/psr7: guzzlehttp/psr7: CRLF Injection in HTTP Start-Line Serialization CVE-2026-48998Mediumguzzlehttp/psr7: guzzlehttp/psr7 has Host Confusion via Authority Reinterpretation CVE-2026-49214Mediumguzzlehttp/psr7: guzzlehttp/psr7 has CRLF Injection via URI Host Component CVE-2023-29197Mediumguzzlehttp/psr7: Improper header name validation in guzzlehttp/psr7 CVE-2022-24775Mediumguzzlehttp/psr7: Improper Input Validation in guzzlehttp/psr7

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