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CVE-2012-0455

17
FAUCET Score

CVE-2012-0455 is a cross-site scripting (XSS) vulnerability affecting multiple Mozilla products, including Firefox, Firefox ESR, Thunderbird, Thunderbird ESR, and SeaMonkey. The flaw stems from insufficient restrictions on drag-and-drop operations involving javascript: URLs, allowing user-assisted remote attackers to inject malicious scripts via specially crafted web pages. With a CVSS score of 4.3, this vulnerability is of medium complexity and requires user interaction, but could lead to information disclosure or session hijacking. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 3.6.27CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
4.0CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:4.0:*:*:*:*:*:*:*
4.0CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:4.0:beta1:*:*:*:*:*:*
4.0CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:4.0:beta10:*:*:*:*:*:*
4.0CPE matchmatch criteria
cpe:2.3:a:mozilla:firefox:4.0:beta11:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

4.3MEDIUM

AV:N/AC:M/Au:N/C:N/I:P/A:N

Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
1.76%
Probability of exploitation in next 30 days
EPSS Percentile
75.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0176 is in the 55th percentile among its peer group of 19,955 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (8)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: thunderbird-0:10.0.3-1.el6_2
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: firefox-0:10.0.3-1.el5_8
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: xulrunner-0:10.0.3-1.el5_8
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: thunderbird-0:10.0.3-1.el5_8
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: firefox-0:10.0.3-1.el6_2
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: xulrunner-0:10.0.3-1.el6_2
View patch
mozillavendor investigatingvia nvd_reference
View patch
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: firefox

Vendor Advisories (1)

redhatCVE-2012-0455Moderate

Mozilla: XSS with Drag and Drop and Javascript: URL (MFSA 2012-13)

Mar 13, 2012

References

lists.opensuse.org / opensuse-security-announce/2012-03/msg00014.html
lists.opensuse.org / opensuse-security-announce/2012-03/msg00015.html
lists.opensuse.org / opensuse-updates/2012-03/msg00042.html
Mailing ListThird Party Advisory
rhn.redhat.com / errata/RHSA-2012-0387.html
rhn.redhat.com / errata/RHSA-2012-0388.html
bugzilla.mozilla.org / show_bug.cgi
Issue TrackingThird Party Advisory
secunia.com / advisories/48359
secunia.com / advisories/48402
secunia.com / advisories/48414
secunia.com / advisories/48495
Third Party Advisory
secunia.com / advisories/48496
Third Party Advisory
secunia.com / advisories/48513
Third Party Advisory
secunia.com / advisories/48553
Third Party Advisory
secunia.com / advisories/48561
Third Party Advisory
secunia.com / advisories/48624
Third Party Advisory
secunia.com / advisories/48629
Third Party Advisory
secunia.com / advisories/48823
Third Party Advisory
secunia.com / advisories/48920
Third Party Advisory
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A14829
Third Party Advisory
debian.org / security/2012/dsa-2433
Third Party Advisory
debian.org / security/2012/dsa-2458
mandriva.com / security/advisories
mandriva.com / security/advisories
mozilla.org / security/announce/2012/mfsa2012-13.html
Vendor Advisory
securityfocus.com / bid/52458
securitytracker.com / id
securitytracker.com / id
securitytracker.com / id
ubuntu.com / usn/USN-1400-1
ubuntu.com / usn/USN-1400-2
Third Party Advisory
ubuntu.com / usn/USN-1400-3
Third Party Advisory
ubuntu.com / usn/USN-1400-4
Third Party Advisory
ubuntu.com / usn/USN-1400-5
Third Party Advisory
ubuntu.com / usn/USN-1401-1
Third Party Advisory