using fullpage.js you can create a anchor tag . But when put href in anchor then it does not sanitize the url which allow for a break in the context of anchor element and can add our new element.
References
- https://nvd.nist.gov/vuln/detail/CVE-2022-1330
- https://github.com/alvarotrigo/fullpage.js/commit/e7a5db42711700c8a584e61b5e532a64039fe92b
- https://huntr.dev/bounties/08d2a6d0-772f-4b05-834e-86343f263c35
- https://github.com/alvarotrigo/fullPage.js/pull/4360
- https://github.com/advisories/GHSA-h3cq-j957-vhxg