diff --git a/RELEASE.md b/RELEASE.md
new file mode 100644
index 00000000..88e2308d
--- /dev/null
+++ b/RELEASE.md
@@ -0,0 +1,3 @@
+Release type: patch
+
+Sanitize slashes in WordPress import titles to prevent crash. Fixes #3561
diff --git a/pelican/tools/pelican_import.py b/pelican/tools/pelican_import.py
index 1c03f9c9..2c72107f 100755
--- a/pelican/tools/pelican_import.py
+++ b/pelican/tools/pelican_import.py
@@ -968,6 +968,9 @@ def fields2pelican(
         if is_pandoc_needed(in_markup) and not pandoc_version:
             posts_require_pandoc.append(filename)
 
+        #Replace "/" with "-" in filename
+        filename = filename.replace("/", "-")
+
         slug = (not disable_slugs and filename) or None
         assert slug is None or filename == os.path.basename(filename), (
             f"filename is not a basename: {filename}"