CVE-2008-5506: Canonical Ubuntu Linux

Medium severity, CVSS 6.8. EPSS: 2.1% chance of exploitation in the next 30 days.

Mozilla Firefox 3.x before 3.0.5 and 2.x before 2.0.0.19, Thunderbird 2.x before 2.0.0.19, and SeaMonkey 1.x before 1.1.14 allows remote attackers to bypass the same origin policy by causing the browser to issue an XMLHttpRequest to an attacker-controlled resource that uses a 302 redirect to a resource in a different domain, then reading content from the response, aka "response disclosure."

Affected products

• Canonical Ubuntu Linux: version 6.06 only; version 7.10 only; version 8.04 only; version 8.10 only
• Debian Debian Linux: version 4.0 only; version 5.0 only
• Mozilla Firefox: from 2.0, before 2.0.0.19 (fixed in 2.0.0.19); from 3.0, before 3.0.5 (fixed in 3.0.5)
• Mozilla Seamonkey: from 1.0, before 1.1.14 (fixed in 1.1.14)
• Mozilla Thunderbird: from 2.0, before 2.0.0.19 (fixed in 2.0.0.19)

Published 2008-12-17. Last modified 2026-06-16.