diff --git a/NEWS b/NEWS
index 50901b3926a9..3c68c6cd1390 100644
--- a/NEWS
+++ b/NEWS
@@ -20,6 +20,10 @@ PHP                                                                        NEWS
   . Fixed bug GH-9033 (Loading blacklist file can fail due to negative length).
     (cmb)
 
+- OpenSSL:
+  . Fixed bug GH-9339 (OpenSSL oid_file path check warning contains
+    uninitialized path). (Jakub Zelenka)
+
 - PDO_SQLite:
   . Fixed bug GH-9032 (SQLite3 authorizer crashes on NULL values). (cmb)
 
diff --git a/ext/openssl/openssl.c b/ext/openssl/openssl.c
index f791cfa85603..208776e33015 100644
--- a/ext/openssl/openssl.c
+++ b/ext/openssl/openssl.c
@@ -506,15 +506,15 @@ static bool php_openssl_check_path_ex(
 		error_msg = "must not contain any null bytes";
 		error_type = E_ERROR;
 	} else if (expand_filepath(fs_file_path, real_path) == NULL) {
-		error_msg = "The argument must be a valid file path";
+		error_msg = "must be a valid file path";
 	}
 
 	if (error_msg != NULL) {
 		if (arg_num == 0) {
 			const char *option_title = option_name ? option_name : "unknown";
 			const char *option_label = is_from_array ? "array item" : "option";
-			php_error_docref(NULL, E_WARNING, "Path '%s' for %s %s %s",
-				real_path, option_title, option_label, error_msg);
+			php_error_docref(NULL, E_WARNING, "Path for %s %s %s",
+					option_title, option_label, error_msg);
 		} else if (is_from_array && option_name != NULL) {
 			php_openssl_check_path_error(
 					arg_num, error_type, "option %s array item %s", option_name, error_msg);
diff --git a/ext/openssl/tests/gh9339.phpt b/ext/openssl/tests/gh9339.phpt
new file mode 100644
index 000000000000..9e4adbccce7f
--- /dev/null
+++ b/ext/openssl/tests/gh9339.phpt
@@ -0,0 +1,25 @@
+--TEST--
+GH-9339: oid_file path check warning contains uninitialized path
+--SKIPIF--
+<?php
+if (!extension_loaded("openssl")) die("skip openssl not loaded");
+?>
+--FILE--
+<?php
+$configCode = <<<CONFIG
+oid_file = %s
+[ req ]
+default_bits = 1024
+CONFIG;
+
+$configFile = __DIR__ . '/gh9339.cnf';
+file_put_contents($configFile, sprintf($configCode,  __DIR__ . '/' . str_repeat('a', 9000)));
+openssl_pkey_new([ 'config' => $configFile ]);
+?>
+--CLEAN--
+<?php
+@unlink(__DIR__ . '/gh9339.cnf');
+?>
+--EXPECTF--
+
+Warning: openssl_pkey_new(): Path for oid_file option must be a valid file path in %s on line %d