CVE-2002-2436

Severity: medium (CVSS 4.3 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.1% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2011-12-07 · updated 2026-06-16
Weakness: CWE-200

Description

The Cascading Style Sheets (CSS) implementation in Mozilla Firefox before 4.0, Thunderbird before 3.3, and SeaMonkey before 2.1 does not properly handle the :visited pseudo-class, which allows remote attackers to obtain sensitive information about visited web pages via a crafted HTML document, a related issue to CVE-2010-2264.

Affected products

Mozilla Firefox: through 3.6.24; 3.0, 3.0.1, 3.0.2, 3.0.3, 3.0.4, 3.0.5 (+51)
Mozilla Seamonkey: through 2.1; 1.0, 1.0-alpha, 1.0-beta, 1.0.1, 1.0.2, 1.0.3 (+56)
Mozilla Thunderbird: through 3.1.16; 3.0, 3.0.1, 3.0.2, 3.0.3, 3.0.4, 3.0.5 (+22)

References

http://blog.mozilla.com/security/2010/03/31/plugging-the-css-history-leak/
http://bugzilla.mozilla.org/show_bug.cgi?id=147777
http://w2spconf.com/2010/papers/p26.pdf
https://developer.mozilla.org/en/CSS/Privacy_and_the_:visited_selector
https://exchange.xforce.ibmcloud.com/vulnerabilities/71816
http://blog.mozilla.com/security/2010/03/31/plugging-the-css-history-leak/
http://bugzilla.mozilla.org/show_bug.cgi?id=147777
http://w2spconf.com/2010/papers/p26.pdf
https://developer.mozilla.org/en/CSS/Privacy_and_the_:visited_selector
https://exchange.xforce.ibmcloud.com/vulnerabilities/71816

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