How severe is CVE-2011-2878?

CVE-2011-2878 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-2011-2878 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (59th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2011-2878?

CVE-2011-2878 affects Google Chrome. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2011-2878?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2011-2878 published?

CVE-2011-2878 was published on 2011-10-04 and last updated on 2026-06-16.

CVE-2011-2878

CVE-2011-2878 is a high-severity vulnerability in Google Chrome with a CVSS 2.0 base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 2.0 base score 7.5)
EPSS exploit prediction: 1% (59th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Google Chrome
Published: 2011-10-04
Last modified: 2026-06-16

Description

Google Chrome before 14.0.835.202 does not properly restrict access to the window prototype, which allows remote attackers to bypass the Same Origin Policy via unspecified vectors.

Frequently asked questions

What is CVE-2011-2878?: Google Chrome before 14.0.835.202 does not properly restrict access to the window prototype, which allows remote attackers to bypass the Same Origin Policy via unspecified vectors.
How severe is CVE-2011-2878?: CVE-2011-2878 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-2011-2878 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (59th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2011-2878?: CVE-2011-2878 affects Google Chrome. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2011-2878?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2011-2878 published?: CVE-2011-2878 was published on 2011-10-04 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*

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