CVE-2011-0400

CVE-2011-0400 is a medium-severity vulnerability in Matomo 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-16.

Key facts

Description

Cookie.php in Piwik before 1.1 does not set the secure flag for the session cookie in an https session, which makes it easier for remote attackers to capture this cookie by intercepting its transmission within an http session.

Frequently asked questions

What is CVE-2011-0400?
Cookie.php in Piwik before 1.1 does not set the secure flag for the session cookie in an https session, which makes it easier for remote attackers to capture this cookie by intercepting its transmission within an http session.
How severe is CVE-2011-0400?
CVE-2011-0400 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2011-0400 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (67th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2011-0400?
CVE-2011-0400 primarily affects Matomo. In total, 67 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2011-0400?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2011-0400 published?
CVE-2011-0400 was published on 2011-01-10 and last updated on 2026-06-16.

References

Affected products (67)

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