The Apache2 component in PHP before 5.6.38, 7.0.x before 7.0.32, 7.1.x before 7.1.22, and 7.2.x before 7.2.10 allows XSS via the body of a Transfer-Encoding: chunked request, because the bucket brigade is mishandled in the php_handler function in sapi/apache2handler/sapi_apache2.c. https://nvd.nist.gov/vuln/detail/CVE-2018-17082
