The InstallTrigger.install method in Firefox before 1.0.5 and Mozilla before 1.7.9 allows remote attackers to execute a callback function in the context of another domain by forcing a page navigation after the install method has been called, which causes the callback to be run in the context of the new page and results in a same origin violation.
AV:N/AC:L/Au:N/C:N/I:P/A:N
This vulnerability has a 3.10% probability of being exploited in the next 30 days, ranking higher than 87% of all scored CVEs.