How severe is CVE-2014-7939?

CVE-2014-7939 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2014-7939 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2014-7939?

CVE-2014-7939 primarily affects Google Chrome. In total, 8 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2014-7939?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2014-7939 published?

CVE-2014-7939 was published on 2015-01-22 and last updated on 2026-06-17.

CVE-2014-7939

CVE-2014-7939 is a medium-severity vulnerability in Google Chrome 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. The underlying weakness is classified as CWE-264.

Key facts

Severity: Medium (CVSS 2.0 base score 4.3)
EPSS exploit prediction: 3% (83rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-264
Affected product: Google Chrome
Published: 2015-01-22
Last modified: 2026-06-17

Description

Google Chrome before 40.0.2214.91, when the Harmony proxy in Google V8 is enabled, allows remote attackers to bypass the Same Origin Policy via crafted JavaScript code with Proxy.create and console.log calls, related to HTTP responses that lack an "X-Content-Type-Options: nosniff" header.

Frequently asked questions

What is CVE-2014-7939?: Google Chrome before 40.0.2214.91, when the Harmony proxy in Google V8 is enabled, allows remote attackers to bypass the Same Origin Policy via crafted JavaScript code with Proxy.create and console.log calls, related to HTTP responses that lack an "X-Content-Type-Options: nosniff" header.
How severe is CVE-2014-7939?: CVE-2014-7939 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2014-7939 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2014-7939?: CVE-2014-7939 primarily affects Google Chrome. In total, 8 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2014-7939?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2014-7939 published?: CVE-2014-7939 was published on 2015-01-22 and last updated on 2026-06-17.

References

Affected products (8)

cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*
cpe:2.3:a:chromium:chromium:40.0.2214.110:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_desktop_supplementary:6.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_server_supplementary:6.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_server_supplementary_eus:6.6.z:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_workstation_supplementary:6.0:*:*:*:*:*:*:*
cpe:2.3:o:opensuse:opensuse:13.1:*:*:*:*:*:*:*
cpe:2.3:o:opensuse:opensuse:13.2:*:*:*:*:*:*:*

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