WordPress Photo Gallery by 10Web plugin before 1.5.69 contains multiple reflected cross-site scripting vulnerabilities via the gallery_id, tag, album_id and theme_id GET parameters passed to the bwg_frontend_data AJAX action, available to both unauthenticated and authenticated users.
View the template here CVE-2021-24291.yaml
References:
https://packetstormsecurity.com/files/162227/