Multiple stored cross-site scripting (XSS) vulnerabilities in Sage EasyPay 10.7.5.10 allow authenticated attackers to inject arbitrary web script or HTML via multiple parameters through Unicode Transformations (Best-fit Mapping), as demonstrated by the full-width variants of the less-than sign (%EF%BC%9C) and greater-than sign (%EF%BC%9E).
Source: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-13893
Reference (s):
- https://gist.github.com/picar0jsu/4532a6d15e8f8d7597b7dca5136ad655
- https://www.sage.com/en-sg/products/sage-easypay/