CVE-2007-3827

Severity: medium (CVSS 5.0 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.9% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2007-07-17 · updated 2026-06-16

Description

Mozilla Firefox allows for cookies to be set with a null domain (aka "domainless cookies"), which allows remote attackers to pass information between arbitrary domains and track user activity, as demonstrated by the domain attribute in the document.cookie variable in a javascript: window.

Affected products

Mozilla Firefox: all versions

References

http://securityreason.com/securityalert/2892
http://www.securityfocus.com/archive/1/473702/100/0/threaded
http://securityreason.com/securityalert/2892
http://www.securityfocus.com/archive/1/473702/100/0/threaded

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