diff --git a/NEWS b/NEWS
index 043bfb73300..faae0d71369 100644
--- a/NEWS
+++ b/NEWS
@@ -54,6 +54,10 @@ PHP                                                                        NEWS
   . Fixed bug GH-15982 (Assertion failure with array_find when references are
     involved). (nielsdos)
 
+- Streams:
+  . Fixed bugs GH-15908 and GH-15026 (leak / assertion failure in streams.c).
+    (nielsdos)
+
 - Zip:
   . Added ZipArchive::ER_TRUNCATED_ZIP added in libzip 1.11. (Remi)
 
diff --git a/ext/standard/tests/streams/gh15908.phpt b/ext/standard/tests/streams/gh15908.phpt
new file mode 100644
index 00000000000..31714b20530
--- /dev/null
+++ b/ext/standard/tests/streams/gh15908.phpt
@@ -0,0 +1,38 @@
+--TEST--
+GH-15908 (leak / assertion failure in streams.c)
+--CREDITS--
+YuanchengJiang
+LuMingYinDetect
+--FILE--
+<?php
+class TestStream {
+    public $context;
+    private $s = 0;
+    function stream_open($path, $mode, $options, &$opened_path) {
+        return true;
+    }
+    function stream_read($count) {
+        echo "Read done\n";
+        if ($this->s++ == 0)
+            return "a\nbb\ncc";
+        return "";
+    }
+    function stream_eof() {
+        return $this->s >= 2;
+    }
+}
+touch(__DIR__."/gh15908.tmp");
+stream_wrapper_register("test", "TestStream");
+$f = fopen("test://", "r");
+try {
+    file_put_contents(__DIR__."/gh15908.tmp", $f, FILE_USE_INCLUDE_PATH, $f);
+} catch (Error $e) {
+    echo $e->getMessage(), "\n";
+}
+?>
+--CLEAN--
+<?php
+@unlink(__DIR__."/gh15908.tmp");
+?>
+--EXPECT--
+file_put_contents(): supplied resource is not a valid Stream-Context resource
diff --git a/main/streams/streams.c b/main/streams/streams.c
index f3fb5e3cda5..72f7bc3daeb 100644
--- a/main/streams/streams.c
+++ b/main/streams/streams.c
@@ -2211,7 +2211,9 @@ PHPAPI php_stream *_php_stream_open_wrapper_ex(const char *path, const char *mod
 			options &= ~USE_PATH;
 		}
 		if (EG(exception)) {
-			ZEND_ASSERT(resolved_path == NULL);
+			if (resolved_path) {
+				zend_string_release_ex(resolved_path, false);
+			}
 			return NULL;
 		}
 	}