CVE-2009-2953: Mozilla Firefox

Medium severity, CVSS 5.0. EPSS: 4.6% chance of exploitation in the next 30 days.

Mozilla Firefox 3.0.6 through 3.0.13, and 3.5.x, allows remote attackers to cause a denial of service (CPU consumption) via JavaScript code with a long string value for the hash property (aka location.hash), a related issue to CVE-2008-5715.

Affected products

• Mozilla Firefox: version 3.0.6 only; version 3.0.7 only; version 3.0.8 only; version 3.0.9 only; version 3.0.10 only; version 3.0.11 only; …

Published 2009-08-24. Last modified 2026-06-16.