Hi there,
Thank you for reaching out!
I understand that you’re looking for a plugin which allows product short description to be bulk-edited.
I see a couple of plugins capable of bulk editing short description:
https://woocommerce.com/products/bulk-edit-products-prices-and-attributes/
https://www.ads-software.com/plugins/woo-bulk-edit-products/
I’m sure it’s possible to find more.
Alternatively, WooCommerce by default, you could export products to a .csv file, bulk-edit short description in Excel or Google Sheets and re-upload:
https://docs.woocommerce.com/document/product-csv-importer-exporter/
I hope this helps!