Firefox 1.5.0.3 is a security update, released 2006-05-02. The only change was a fix for a publicly disclosed vulnerability that could lead to remote compromise. It does not include fixes for non-security bugs -- while most 1.5.0.x releases include a number of low-risk fixes for other types of bugs, Mozilla wanted to release Firefox 1.5.0.3 quickly to respond to the publicly disclosed vulnerability.
This page was last updated 2006-05-03.