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CVE-2012-1956

Mozilla Firefox before 15.0, Thunderbird before 15.0, and SeaMonkey before 2.12 do not prevent...

4.3 MediumFix available

CVE-2012-1956 is a medium vulnerability (CVSS 4.3) in Mozilla Firefox, published August 29, 2012. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.89%, the 79th percentile. Fixed in firefox 0:10.0.8-1.el5_8.

Mozilla Firefox before 15.0, Thunderbird before 15.0, and SeaMonkey before 2.12 do not prevent use of the Object.defineProperty method to shadow the location object (aka window.location), which makes it easier for remote attackers to conduct cross-site scripting (XSS) attacks via vectors involving a plugin.

Exploit likelihood

1.89%Down 0.1 points since Feb 4, 2022
90%50%10%1%

What each source reports

NVD Score used 4.3

Mozilla Firefox before 15.0, Thunderbird before 15.0, and SeaMonkey before 2.12 do not prevent use of the Object.defineProperty method to shadow the location object (aka window.location), which makes it easier for remote attackers to conduct cross-site scripting (XSS) attacks via vectors involving a plugin.

Record
CVE-2012-1956
CVSS 2.0
4.3 MediumAV:N/AC:M/Au:N/C:N/I:P/A:N
Weakness
CWE-79
Updated
2026-11-02
CVE List No score

Mozilla Firefox before 15.0, Thunderbird before 15.0, and SeaMonkey before 2.12 do not prevent use of the Object.defineProperty method to shadow the location object (aka window.location), which makes it easier for remote attackers to conduct cross-site scripting (XSS) attacks via vectors involving a plugin.

Record
CVE-2012-1956
Updated
2026-11-02
EUVDEUVD-2012-1965 No score

Mozilla Firefox before 15.0, Thunderbird before 15.0, and SeaMonkey before 2.12 do not prevent use of the Object.defineProperty method to shadow the location object (aka window.location), which makes it easier for remote attackers to conduct cross-site scripting (XSS) attacks via vectors involving a plugin.

Record
EUVD-2012-1965
Updated
2026-11-03
GitHub AdvisoriesGHSA-8449-cw6v-fqcw No score

Mozilla Firefox before 15.0, Thunderbird before 15.0, and SeaMonkey before 2.12 do not prevent...

Mozilla Firefox before 15.0, Thunderbird before 15.0, and SeaMonkey before 2.12 do not prevent use of the Object.defineProperty method to shadow the location object (aka window.location), which makes it easier for remote attackers to conduct cross-site scripting (XSS) attacks via vectors involving a plugin.

Record
GHSA-8449-cw6v-fqcw
Weakness
CWE-79
Updated
2026-11-02
OSVopenSUSE-SU-2024:10071-1 No score

MozillaFirefox-50.1.0-1.1 on GA media

These are all security issues fixed in the MozillaFirefox-50.1.0-1.1 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2024:10071-1
Updated
2026-11-02
OSVopenSUSE-SU-2024:10218-1 No score

seamonkey-2.40-6.1 on GA media

These are all security issues fixed in the seamonkey-2.40-6.1 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2024:10218-1
Updated
2026-11-02
OSVopenSUSE-SU-2024:10230-1 No score

MozillaThunderbird-45.5.1-1.1 on GA media

These are all security issues fixed in the MozillaThunderbird-45.5.1-1.1 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2024:10230-1
Updated
2026-11-02
OSVopenSUSE-SU-2024:14572-1 No score

firefox-esr-128.5.1-1.1 on GA media

These are all security issues fixed in the firefox-esr-128.5.1-1.1 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2024:14572-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
firefox
Red Hat:enterprise_linux:5::client
 before 0:10.0.8-1.el5_8
0:10.0.8-1.el5_8
firefox-debuginfo
Red Hat:enterprise_linux:5::client
 before 0:10.0.8-1.el5_8
0:10.0.8-1.el5_8
xulrunner
Red Hat:enterprise_linux:5::client
 before 0:10.0.8-1.el5_8
0:10.0.8-1.el5_8
xulrunner-debuginfo
Red Hat:enterprise_linux:5::client
 before 0:10.0.8-1.el5_8
0:10.0.8-1.el5_8
xulrunner
Red Hat:enterprise_linux:5::client_workstation
 before 0:10.0.8-1.el5_8
0:10.0.8-1.el5_8
xulrunner-debuginfo
Red Hat:enterprise_linux:5::client_workstation
 before 0:10.0.8-1.el5_8
0:10.0.8-1.el5_8
xulrunner-devel
Red Hat:enterprise_linux:5::client_workstation
 before 0:10.0.8-1.el5_8
0:10.0.8-1.el5_8
firefox
Red Hat:enterprise_linux:5::server
 before 0:10.0.8-1.el5_8
0:10.0.8-1.el5_8
firefox-debuginfo
Red Hat:enterprise_linux:5::server
 before 0:10.0.8-1.el5_8
0:10.0.8-1.el5_8
xulrunner
Red Hat:enterprise_linux:5::server
 before 0:10.0.8-1.el5_8
0:10.0.8-1.el5_8
Show 35 moreShow less
Affected packages
PackageAffectedFixed
xulrunner-debuginfo
Red Hat:enterprise_linux:5::server
 before 0:10.0.8-1.el5_8
0:10.0.8-1.el5_8
xulrunner-devel
Red Hat:enterprise_linux:5::server
 before 0:10.0.8-1.el5_8
0:10.0.8-1.el5_8
firefox
Red Hat:enterprise_linux:6::client
 before 0:10.0.8-1.el6_3
0:10.0.8-1.el6_3
firefox-debuginfo
Red Hat:enterprise_linux:6::client
 before 0:10.0.8-1.el6_3
0:10.0.8-1.el6_3
xulrunner
Red Hat:enterprise_linux:6::client
 before 0:10.0.8-1.el6_3
0:10.0.8-1.el6_3
xulrunner-debuginfo
Red Hat:enterprise_linux:6::client
 before 0:10.0.8-1.el6_3
0:10.0.8-1.el6_3
xulrunner-devel
Red Hat:enterprise_linux:6::client
 before 0:10.0.8-1.el6_3
0:10.0.8-1.el6_3
firefox
Red Hat:enterprise_linux:6::computenode
 before 0:10.0.8-1.el6_3
0:10.0.8-1.el6_3
firefox-debuginfo
Red Hat:enterprise_linux:6::computenode
 before 0:10.0.8-1.el6_3
0:10.0.8-1.el6_3
xulrunner
Red Hat:enterprise_linux:6::computenode
 before 0:10.0.8-1.el6_3
0:10.0.8-1.el6_3
xulrunner-debuginfo
Red Hat:enterprise_linux:6::computenode
 before 0:10.0.8-1.el6_3
0:10.0.8-1.el6_3
xulrunner-devel
Red Hat:enterprise_linux:6::computenode
 before 0:10.0.8-1.el6_3
0:10.0.8-1.el6_3
firefox
Red Hat:enterprise_linux:6::server
 before 0:10.0.8-1.el6_3
0:10.0.8-1.el6_3
firefox-debuginfo
Red Hat:enterprise_linux:6::server
 before 0:10.0.8-1.el6_3
0:10.0.8-1.el6_3
xulrunner
Red Hat:enterprise_linux:6::server
 before 0:10.0.8-1.el6_3
0:10.0.8-1.el6_3
xulrunner-debuginfo
Red Hat:enterprise_linux:6::server
 before 0:10.0.8-1.el6_3
0:10.0.8-1.el6_3
xulrunner-devel
Red Hat:enterprise_linux:6::server
 before 0:10.0.8-1.el6_3
0:10.0.8-1.el6_3
firefox
Red Hat:enterprise_linux:6::workstation
 before 0:10.0.8-1.el6_3
0:10.0.8-1.el6_3
firefox-debuginfo
Red Hat:enterprise_linux:6::workstation
 before 0:10.0.8-1.el6_3
0:10.0.8-1.el6_3
xulrunner
Red Hat:enterprise_linux:6::workstation
 before 0:10.0.8-1.el6_3
0:10.0.8-1.el6_3
xulrunner-debuginfo
Red Hat:enterprise_linux:6::workstation
 before 0:10.0.8-1.el6_3
0:10.0.8-1.el6_3
xulrunner-devel
Red Hat:enterprise_linux:6::workstation
 before 0:10.0.8-1.el6_3
0:10.0.8-1.el6_3
thunderbird
Red Hat:enterprise_linux:5::client
 before 0:10.0.8-1.el5_8
0:10.0.8-1.el5_8
thunderbird-debuginfo
Red Hat:enterprise_linux:5::client
 before 0:10.0.8-1.el5_8
0:10.0.8-1.el5_8
thunderbird
Red Hat:rhel_productivity:5
 before 0:10.0.8-1.el5_8
0:10.0.8-1.el5_8
thunderbird-debuginfo
Red Hat:rhel_productivity:5
 before 0:10.0.8-1.el5_8
0:10.0.8-1.el5_8
thunderbird
Red Hat:enterprise_linux:6::client
 before 0:10.0.8-1.el6_3
0:10.0.8-1.el6_3
thunderbird-debuginfo
Red Hat:enterprise_linux:6::client
 before 0:10.0.8-1.el6_3
0:10.0.8-1.el6_3
thunderbird
Red Hat:enterprise_linux:6::server
 before 0:10.0.8-1.el6_3
0:10.0.8-1.el6_3
thunderbird-debuginfo
Red Hat:enterprise_linux:6::server
 before 0:10.0.8-1.el6_3
0:10.0.8-1.el6_3
thunderbird
Red Hat:enterprise_linux:6::workstation
 before 0:10.0.8-1.el6_3
0:10.0.8-1.el6_3
thunderbird-debuginfo
Red Hat:enterprise_linux:6::workstation
 before 0:10.0.8-1.el6_3
0:10.0.8-1.el6_3
MozillaFirefox
openSUSE:Tumbleweed
 before 50.1.0-1.1
50.1.0-1.1
MozillaThunderbird
openSUSE:Tumbleweed
 before 45.5.1-1.1
45.5.1-1.1
firefox-esr
openSUSE:Tumbleweed
 before 128.5.1-1.1
128.5.1-1.1

History

History
WhenChangedSources
2026-11-03aliasesEUVD
2026-11-02createdCVE List, GitHub Advisories, NVD, OSV

References

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