As an open source penetration testing tool, IPTC-Attacker allows to create an image with IPTC metadata containing testing vectors for Cross-Site Scripting attacks. Each checkbox can be used to include a huge collection of payloads into the selected tags (HTML5sec, XSS Cheat Sheet). If a checkbox will be not selected, the string aaa'bbb"ccc<ddd is automatically included into the unchecked IPTC tag.
Therefore, testing for XSS vulnerabilities via IPTC metadata is possible by looking...