FireFox 2.0.0.10 is released with 3 High Security Risks fixed.

Check out the release notes.

These are fixed in FireFox 2.0.0.10

MFSA 2007-39 Referer-spoofing via window.location race condition
MFSA 2007-38 Memory corruption vulnerabilities (rv:1.8.1.10)
MFSA 2007-37 jar: URI scheme XSS hazard

You can update your FireFox using “Check For Updates” under the “Help Option”.