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Fencer Intel
medium 4.3

CVE-2014-7939 json

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…

published 2015-01-22 11 y ago modified 2026-06-17 4 mo ago also EUVD-2014-7789

cvss
4.3
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.5%
EPSS 2.5% chance of exploitation in 30 days, percentile 84%
public exploits
0
none known

Summary

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.

Patch / fix

  • chromium-browser Ubuntu 14.04 LTS 40.0.2214.94-0ubuntu0.14.04.1.1068

ubuntu advisories UBUNTU-CVE-2014-7939

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • chromium-browser RHEL 6 EXTRAS 40.0.2214.91-1.el6_6

red hat advisories RHSA-2015:0093

  • chromium openSUSE Tumbleweed 55.0.2883.75-3.1
  • chromium openSUSE Tumbleweed 113.0.5672.92-1.1

opensuse advisories openSUSE-SU-2024:10171-1openSUSE-SU-2024:12948-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2014-7939 updated cvss 6.8

chromium-browser: same-origin-bypass in V8

  • Red Hat Enterprise Linux Desktop Supplementary (v. 6) chromium-browser 40.0.2214.91-1.el6_6 Red Hat Enterprise Linux Server Supplementary (v. 6) chromium-browser 40.0.2214.91-1.el6_6 Red Hat Enterprise Linux Workstation Supplementary (v. 6) chromium-browser 40.0.2214.91-1.el6_6
    fixed: vendor fix RHSA-2015:0093

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

2.51% chance of exploitation in the next 30 days, higher than 84% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:P/A:N

Classification

Weakness
  • CWE-264 Permissions, Privileges, and Access Controls
Technology feeds

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.