CVE-2011-2362

CVE-2011-2362 is a medium-severity vulnerability in Mozilla Seamonkey with a CVSS 2.0 base score of 5.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-264.

Key facts

Description

Mozilla Firefox before 3.6.18, Thunderbird before 3.1.11, and SeaMonkey through 2.0.14 do not distinguish between cookies for two domain names that differ only in a trailing dot, which allows remote web servers to bypass the Same Origin Policy via Set-Cookie headers.

Frequently asked questions

What is CVE-2011-2362?
Mozilla Firefox before 3.6.18, Thunderbird before 3.1.11, and SeaMonkey through 2.0.14 do not distinguish between cookies for two domain names that differ only in a trailing dot, which allows remote web servers to bypass the Same Origin Policy via Set-Cookie headers.
How severe is CVE-2011-2362?
CVE-2011-2362 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2011-2362 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (76th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2011-2362?
CVE-2011-2362 primarily affects Mozilla Seamonkey. In total, 251 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2011-2362?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2011-2362 published?
CVE-2011-2362 was published on 2011-06-30 and last updated on 2026-06-16.

References

Affected products (251)

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