CVE-2012-4195
The nsLocation::CheckURL function in Mozilla Firefox before 16.0.2, Firefox ESR 10.x before 10.0...
The nsLocation::CheckURL function in Mozilla Firefox before 16.0.2, Firefox ESR 10.x before 10.0.10, Thunderbird before 16.0.2, Thunderbird ESR 10.x before 10.0.10, and SeaMonkey before 2.13.2 does not properly determine the calling document and principal in its return value, which makes it easier for remote attackers to conduct cross-site scripting (XSS) attacks via a crafted web site, and makes it easier for remote attackers to execute arbitrary JavaScript code by leveraging certain add-on behavior.
Exploit likelihood
What each source reports
NVD Score used
The nsLocation::CheckURL function in Mozilla Firefox before 16.0.2, Firefox ESR 10.x before 10.0.10, Thunderbird before 16.0.2, Thunderbird ESR 10.x before 10.0.10, and SeaMonkey before 2.13.2 does not properly determine the calling document and principal in its return value, which makes it easier for remote attackers to conduct cross-site scripting (XSS) attacks via a crafted web site, and makes it easier for remote attackers to execute arbitrary JavaScript code by leveraging certain add-on behavior.
- Record
CVE-2012-4195- CVSS 2.0
- 4.3 Medium
AV:N/AC:M/Au:N/C:N/I:P/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
CVE List No score
The nsLocation::CheckURL function in Mozilla Firefox before 16.0.2, Firefox ESR 10.x before 10.0.10, Thunderbird before 16.0.2, Thunderbird ESR 10.x before 10.0.10, and SeaMonkey before 2.13.2 does not properly determine the calling document and principal in its return value, which makes it easier for remote attackers to conduct cross-site scripting (XSS) attacks via a crafted web site, and makes it easier for remote attackers to execute arbitrary JavaScript code by leveraging certain add-on behavior.
- Record
CVE-2012-4195- Updated
- 2026-11-02
EUVDEUVD-2012-4139 No score
The nsLocation::CheckURL function in Mozilla Firefox before 16.0.2, Firefox ESR 10.x before 10.0.10, Thunderbird before 16.0.2, Thunderbird ESR 10.x before 10.0.10, and SeaMonkey before 2.13.2 does not properly determine the calling document and principal in its return value, which makes it easier for remote attackers to conduct cross-site scripting (XSS) attacks via a crafted web site, and makes it easier for remote attackers to execute arbitrary JavaScript code by leveraging certain add-on behavior.
- Record
EUVD-2012-4139- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-44cp-4449-xfm3 No score
The nsLocation::CheckURL function in Mozilla Firefox before 16.0.2, Firefox ESR 10.x before 10.0...
The nsLocation::CheckURL function in Mozilla Firefox before 16.0.2, Firefox ESR 10.x before 10.0.10, Thunderbird before 16.0.2, Thunderbird ESR 10.x before 10.0.10, and SeaMonkey before 2.13.2 does not properly determine the calling document and principal in its return value, which makes it easier for remote attackers to conduct cross-site scripting (XSS) attacks via a crafted web site, and makes it easier for remote attackers to execute arbitrary JavaScript code by leveraging certain add-on behavior.
- Record
GHSA-44cp-4449-xfm3- 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
Affected products
- mozilla firefox
- mozilla seamonkey
- mozilla thunderbird
- mozilla thunderbird esr
- canonical ubuntu linux
- opensuse
- redhat enterprise linux desktop
- redhat enterprise linux eus
- redhat enterprise linux server
- redhat enterprise linux workstation
- suse linux enterprise desktop
- suse linux enterprise server
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Affected packages
| Package | Affected | Fixed |
|---|---|---|
firefoxRed Hat:enterprise_linux:5::client |
before 0:10.0.10-1.el5_8 | 0:10.0.10-1.el5_8 |
firefox-debuginfoRed Hat:enterprise_linux:5::client |
before 0:10.0.10-1.el5_8 | 0:10.0.10-1.el5_8 |
xulrunnerRed Hat:enterprise_linux:5::client |
before 0:10.0.10-1.el5_8 | 0:10.0.10-1.el5_8 |
xulrunner-debuginfoRed Hat:enterprise_linux:5::client |
before 0:10.0.10-1.el5_8 | 0:10.0.10-1.el5_8 |
xulrunnerRed Hat:enterprise_linux:5::client_workstation |
before 0:10.0.10-1.el5_8 | 0:10.0.10-1.el5_8 |
xulrunner-debuginfoRed Hat:enterprise_linux:5::client_workstation |
before 0:10.0.10-1.el5_8 | 0:10.0.10-1.el5_8 |
xulrunner-develRed Hat:enterprise_linux:5::client_workstation |
before 0:10.0.10-1.el5_8 | 0:10.0.10-1.el5_8 |
firefoxRed Hat:enterprise_linux:5::server |
before 0:10.0.10-1.el5_8 | 0:10.0.10-1.el5_8 |
firefox-debuginfoRed Hat:enterprise_linux:5::server |
before 0:10.0.10-1.el5_8 | 0:10.0.10-1.el5_8 |
xulrunnerRed Hat:enterprise_linux:5::server |
before 0:10.0.10-1.el5_8 | 0:10.0.10-1.el5_8 |
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| Package | Affected | Fixed |
|---|---|---|
xulrunner-debuginfoRed Hat:enterprise_linux:5::server |
before 0:10.0.10-1.el5_8 | 0:10.0.10-1.el5_8 |
xulrunner-develRed Hat:enterprise_linux:5::server |
before 0:10.0.10-1.el5_8 | 0:10.0.10-1.el5_8 |
firefoxRed Hat:enterprise_linux:6::client |
before 0:10.0.10-1.el6_3 | 0:10.0.10-1.el6_3 |
firefox-debuginfoRed Hat:enterprise_linux:6::client |
before 0:10.0.10-1.el6_3 | 0:10.0.10-1.el6_3 |
xulrunnerRed Hat:enterprise_linux:6::client |
before 0:10.0.10-1.el6_3 | 0:10.0.10-1.el6_3 |
xulrunner-debuginfoRed Hat:enterprise_linux:6::client |
before 0:10.0.10-1.el6_3 | 0:10.0.10-1.el6_3 |
xulrunner-develRed Hat:enterprise_linux:6::client |
before 0:10.0.10-1.el6_3 | 0:10.0.10-1.el6_3 |
firefoxRed Hat:enterprise_linux:6::computenode |
before 0:10.0.10-1.el6_3 | 0:10.0.10-1.el6_3 |
firefox-debuginfoRed Hat:enterprise_linux:6::computenode |
before 0:10.0.10-1.el6_3 | 0:10.0.10-1.el6_3 |
xulrunnerRed Hat:enterprise_linux:6::computenode |
before 0:10.0.10-1.el6_3 | 0:10.0.10-1.el6_3 |
xulrunner-debuginfoRed Hat:enterprise_linux:6::computenode |
before 0:10.0.10-1.el6_3 | 0:10.0.10-1.el6_3 |
xulrunner-develRed Hat:enterprise_linux:6::computenode |
before 0:10.0.10-1.el6_3 | 0:10.0.10-1.el6_3 |
firefoxRed Hat:enterprise_linux:6::server |
before 0:10.0.10-1.el6_3 | 0:10.0.10-1.el6_3 |
firefox-debuginfoRed Hat:enterprise_linux:6::server |
before 0:10.0.10-1.el6_3 | 0:10.0.10-1.el6_3 |
xulrunnerRed Hat:enterprise_linux:6::server |
before 0:10.0.10-1.el6_3 | 0:10.0.10-1.el6_3 |
xulrunner-debuginfoRed Hat:enterprise_linux:6::server |
before 0:10.0.10-1.el6_3 | 0:10.0.10-1.el6_3 |
xulrunner-develRed Hat:enterprise_linux:6::server |
before 0:10.0.10-1.el6_3 | 0:10.0.10-1.el6_3 |
firefoxRed Hat:enterprise_linux:6::workstation |
before 0:10.0.10-1.el6_3 | 0:10.0.10-1.el6_3 |
firefox-debuginfoRed Hat:enterprise_linux:6::workstation |
before 0:10.0.10-1.el6_3 | 0:10.0.10-1.el6_3 |
xulrunnerRed Hat:enterprise_linux:6::workstation |
before 0:10.0.10-1.el6_3 | 0:10.0.10-1.el6_3 |
xulrunner-debuginfoRed Hat:enterprise_linux:6::workstation |
before 0:10.0.10-1.el6_3 | 0:10.0.10-1.el6_3 |
xulrunner-develRed Hat:enterprise_linux:6::workstation |
before 0:10.0.10-1.el6_3 | 0:10.0.10-1.el6_3 |
thunderbirdRed Hat:enterprise_linux:5::client |
before 0:10.0.10-1.el5_8 | 0:10.0.10-1.el5_8 |
thunderbird-debuginfoRed Hat:enterprise_linux:5::client |
before 0:10.0.10-1.el5_8 | 0:10.0.10-1.el5_8 |
thunderbirdRed Hat:rhel_productivity:5 |
before 0:10.0.10-1.el5_8 | 0:10.0.10-1.el5_8 |
thunderbird-debuginfoRed Hat:rhel_productivity:5 |
before 0:10.0.10-1.el5_8 | 0:10.0.10-1.el5_8 |
thunderbirdRed Hat:enterprise_linux:6::client |
before 0:10.0.10-1.el6_3 | 0:10.0.10-1.el6_3 |
thunderbird-debuginfoRed Hat:enterprise_linux:6::client |
before 0:10.0.10-1.el6_3 | 0:10.0.10-1.el6_3 |
thunderbirdRed Hat:enterprise_linux:6::server |
before 0:10.0.10-1.el6_3 | 0:10.0.10-1.el6_3 |
thunderbird-debuginfoRed Hat:enterprise_linux:6::server |
before 0:10.0.10-1.el6_3 | 0:10.0.10-1.el6_3 |
thunderbirdRed Hat:enterprise_linux:6::workstation |
before 0:10.0.10-1.el6_3 | 0:10.0.10-1.el6_3 |
thunderbird-debuginfoRed Hat:enterprise_linux:6::workstation |
before 0:10.0.10-1.el6_3 | 0:10.0.10-1.el6_3 |
MozillaFirefoxopenSUSE:Tumbleweed |
before 50.1.0-1.1 | 50.1.0-1.1 |
MozillaThunderbirdopenSUSE:Tumbleweed |
before 45.5.1-1.1 | 45.5.1-1.1 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2012-4195 is a medium vulnerability (CVSS 4.3) in Mozilla Firefox, published October 29, 2012. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.90%, the 79th percentile. Fixed in firefox 0:10.0.10-1.el5_8.
References
secunia.com/advisories/51144
lists.opensuse.org/opensuse-security-announce/2012-10/msg00025.html
bugzilla.mozilla.org/show_bug.cgi?id=793121
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ubuntu.com/usn/USN-1620-1
rhn.redhat.com/errata/RHSA-2012-1407.html
securityfocus.com/bid/56302
mozilla.org/security/announce/2012/mfsa2012-90.html
oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16856
nvd.nist.gov/vuln/detail/CVE-2012-4195
github.com/advisories/GHSA-44cp-4449-xfm3
access.redhat.com/errata/RHSA-2012:1407
bugzilla.redhat.com/show_bug.cgi?id=869893
security.access.redhat.com/data/csaf/v2/advisories/2012/rhsa-2012_1407.json
cve.org/CVERecord?id=CVE-2012-4194
suse.com/security/cve/CVE-2008-5913
Left out here: 778 references. The JSON record has them.