CVE-2006-6506

CVE-2006-6506 is a medium-severity vulnerability in Mozilla Firefox with a CVSS 2.0 base score of 4.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Description

The "Feed Preview" feature in Mozilla Firefox 2.0 before 2.0.0.1 sends the URL of the feed when requesting favicon.ico icons, which results in a privacy leak that might allow feed viewing services to determine browsing habits.

Frequently asked questions

What is CVE-2006-6506?
The "Feed Preview" feature in Mozilla Firefox 2.0 before 2.0.0.1 sends the URL of the feed when requesting favicon.ico icons, which results in a privacy leak that might allow feed viewing services to determine browsing habits.
How severe is CVE-2006-6506?
CVE-2006-6506 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2006-6506 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2006-6506?
CVE-2006-6506 affects Mozilla Firefox. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2006-6506?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2006-6506 published?
CVE-2006-6506 was published on 2006-12-20 and last updated on 2026-06-16.

References

Affected products (1)

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