Mozilla Firefox before 1.8.0.13 and 1.8.1.x before 1.8.1.5 does not perform a security zone check when processing a wyciwyg URI, which allows remote attackers to obtain sensitive information, poison the browser cache, and possibly enable further attack vectors via (1) HTTP 302 redirect controls, (2) XMLHttpRequest, or (3) view-source URIs.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.069
EPSS Ranking 91.0%