diff --git a/NEWS b/NEWS
index 5607f31081b8..31ebb08f01f3 100644
--- a/NEWS
+++ b/NEWS
@@ -45,6 +45,10 @@ PHP                                                                        NEWS
   . Fixed a leak when a persistent connection failed a liveness check
     with no other live PDO handle. (iliaal)
 
+- SOAP:
+  . Fixed bug GH-23447 (Segfault when a class passed to SoapServer::setClass()
+    fails to initialize). (Lazizbek Ergashev)
+
 - Standard:
   . Fixed a memory leak in array_merge_recursive() when the recursive merge of
     an object converted to an array fails. (David Carlier)
diff --git a/ext/soap/soap.c b/ext/soap/soap.c
index 3d5536ef8628..4703c7779305 100644
--- a/ext/soap/soap.c
+++ b/ext/soap/soap.c
@@ -1478,7 +1478,11 @@ PHP_METHOD(SoapServer, handle)
 
 		/* If new session or something weird happned */
 		if (soap_obj == NULL) {
-			object_init_ex(&tmp_soap, service->soap_class.ce);
+			if (UNEXPECTED(object_init_ex(&tmp_soap, service->soap_class.ce) != SUCCESS)) {
+				php_output_discard();
+				_soap_server_exception(service, function, ZEND_THIS);
+				goto fail;
+			}
 
 			/* Call constructor */
 			if (service->soap_class.ce->constructor) {
diff --git a/ext/soap/tests/gh23447.phpt b/ext/soap/tests/gh23447.phpt
new file mode 100644
index 000000000000..4b63b1cde947
--- /dev/null
+++ b/ext/soap/tests/gh23447.phpt
@@ -0,0 +1,26 @@
+--TEST--
+GH-23447 (Segfault when a class passed to SoapServer::setClass() fails to initialize)
+--EXTENSIONS--
+soap
+--FILE--
+<?php
+class foo {
+    private $broken = undefinedConstant;
+}
+
+$server = new SoapServer(null, array('uri' => 'http://testuri.org'));
+$server->setClass('foo');
+
+$server->handle(<<<'XML'
+<?xml version="1.0"?>
+<SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/">
+  <SOAP-ENV:Body><anything/></SOAP-ENV:Body>
+</SOAP-ENV:Envelope>
+XML);
+
+echo "ok\n";
+?>
+--EXPECT--
+<?xml version="1.0" encoding="UTF-8"?>
+<SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/"><SOAP-ENV:Body><SOAP-ENV:Fault><faultcode>SOAP-ENV:Server</faultcode><faultstring>Undefined constant "undefinedConstant"</faultstring></SOAP-ENV:Fault></SOAP-ENV:Body></SOAP-ENV:Envelope>
+ok