CVE-2008-7293: Mozilla Firefox

Medium severity, CVSS 5.8. EPSS: 1.7% chance of exploitation in the next 30 days.

Mozilla Firefox before 4 cannot properly restrict modifications to cookies established in HTTPS sessions, which allows man-in-the-middle attackers to overwrite or delete arbitrary cookies via a Set-Cookie header in an HTTP response, related to lack of the HTTP Strict Transport Security (HSTS) includeSubDomains feature, aka a "cookie forcing" issue.

Affected products

• Mozilla Firefox: up to and including 4.0; version 1.0 only; version 1.0.1 only; version 1.0.2 only; version 1.0.3 only; version 1.0.4 only; …

Published 2011-08-09. Last modified 2026-06-16.