guzzlehttp/guzzle 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-2026-55767Mediumguzzlehttp/guzzle: guzzlehttp/guzzle: Dot-Only Cookie Domains Match All Hosts CVE-2026-55568Mediumguzzlehttp/guzzle: guzzlehttp/guzzle: Silent HTTPS-Proxy Downgrade to Cleartext CVE-2022-31091Highguzzlehttp/guzzle: Change in port should be considered a change in origin CVE-2022-31090Highguzzlehttp/guzzle: CURLOPT_HTTPAUTH option not cleared on change of origin CVE-2022-31042Highguzzlehttp/guzzle: Failure to strip the Cookie header on change in host or HTTP downgrade CVE-2022-31043Highguzzlehttp/guzzle: Fix failure to strip Authorization header on HTTP downgrade CVE-2022-29248Highguzzlehttp/guzzle: Cross-domain cookie leakage in Guzzle CVE-2016-5385Highguzzlehttp/guzzle: HTTP Proxy header vulnerability

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