diff --git a/plugins/woocommerce-admin/client/marketplace/components/product-list-content/product-list-content.tsx b/plugins/woocommerce-admin/client/marketplace/components/product-list-content/product-list-content.tsx
index 45d948fef45..ac4189291e4 100644
--- a/plugins/woocommerce-admin/client/marketplace/components/product-list-content/product-list-content.tsx
+++ b/plugins/woocommerce-admin/client/marketplace/components/product-list-content/product-list-content.tsx
@@ -22,12 +22,14 @@ export default function ProductListContent( props: {
 						title: product.title,
 						icon: product.icon,
 						vendorName: product.vendorName,
-						vendorUrl: appendURLParams( product.vendorUrl, [
-							[ 'utm_source', 'extensionsscreen' ],
-							[ 'utm_medium', 'product' ],
-							[ 'utm_campaign', 'wcaddons' ],
-							[ 'utm_content', 'devpartner' ],
-						] ),
+						vendorUrl: product.vendorUrl
+							? appendURLParams( product.vendorUrl, [
+									[ 'utm_source', 'extensionsscreen' ],
+									[ 'utm_medium', 'product' ],
+									[ 'utm_campaign', 'wcaddons' ],
+									[ 'utm_content', 'devpartner' ],
+							  ] )
+							: '',
 						price: product.price,
 						url: appendURLParams(
 							product.url,
diff --git a/plugins/woocommerce/changelog/fix-wccom-marketplace-products-with-no-vendorurl b/plugins/woocommerce/changelog/fix-wccom-marketplace-products-with-no-vendorurl
new file mode 100644
index 00000000000..393032bc56d
--- /dev/null
+++ b/plugins/woocommerce/changelog/fix-wccom-marketplace-products-with-no-vendorurl
@@ -0,0 +1,5 @@
+Significance: patch
+Type: fix
+Comment: More-resilient handling of absent product vendor URLs when browsing WooCommerce > Extensions.
+
+