CVE-2013-6674

Cross-site scripting (XSS) vulnerability in Mozilla Thunderbird 17.x through 17.0.8, Thunderbird...

4.3 MediumPublic exploit

Cross-site scripting (XSS) vulnerability in Mozilla Thunderbird 17.x through 17.0.8, Thunderbird ESR 17.x through 17.0.10, and SeaMonkey before 2.20 allows user-assisted remote attackers to inject arbitrary web script or HTML via an e-mail message containing a data: URL in an IFRAME element, a related issue to CVE-2014-2018.

Exploit likelihood

7.70%Up 3.9 points since Feb 4, 2022

What each source reports

NVD Score used 4.3

Record: CVE-2013-6674
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

Record: CVE-2013-6674
Updated: 2026-11-02

EUVDEUVD-2013-6476 No score

Record: EUVD-2013-6476
Updated: 2026-11-03

GitHub AdvisoriesGHSA-f33f-rhvc-q7r2 No score

Cross-site scripting (XSS) vulnerability in Mozilla Thunderbird 17.x through 17.0.8, Thunderbird...

Record: GHSA-f33f-rhvc-q7r2
Weakness: CWE-79
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`thunderbird` Red Hat:enterprise_linux:5::client From an advisory covering 9 CVEs	before 0:24.2.0-2.el5_10	0:24.2.0-2.el5_10
`thunderbird-debuginfo` Red Hat:enterprise_linux:5::client From an advisory covering 9 CVEs	before 0:24.2.0-2.el5_10	0:24.2.0-2.el5_10
`thunderbird` Red Hat:rhel_productivity:5 From an advisory covering 9 CVEs	before 0:24.2.0-2.el5_10	0:24.2.0-2.el5_10
`thunderbird-debuginfo` Red Hat:rhel_productivity:5 From an advisory covering 9 CVEs	before 0:24.2.0-2.el5_10	0:24.2.0-2.el5_10
`thunderbird` Red Hat:enterprise_linux:6::client From an advisory covering 9 CVEs	before 0:24.2.0-1.el6_5	0:24.2.0-1.el6_5
`thunderbird-debuginfo` Red Hat:enterprise_linux:6::client From an advisory covering 9 CVEs	before 0:24.2.0-1.el6_5	0:24.2.0-1.el6_5
`thunderbird` Red Hat:enterprise_linux:6::server From an advisory covering 9 CVEs	before 0:24.2.0-1.el6_5	0:24.2.0-1.el6_5
`thunderbird-debuginfo` Red Hat:enterprise_linux:6::server From an advisory covering 9 CVEs	before 0:24.2.0-1.el6_5	0:24.2.0-1.el6_5
`thunderbird` Red Hat:enterprise_linux:6::workstation From an advisory covering 9 CVEs	before 0:24.2.0-1.el6_5	0:24.2.0-1.el6_5
`thunderbird-debuginfo` Red Hat:enterprise_linux:6::workstation From an advisory covering 9 CVEs	before 0:24.2.0-1.el6_5	0:24.2.0-1.el6_5

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
Source	Link	Date
Exploit-DB	Mozilla Thunderbird 17.0.6 - Input Validation Filter Bypass	2014-01-27

History

History
Recorded	Changed	Sources
Nov 6, 2026	affected, facts
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, Exploit-DB, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2013-6674 is a medium vulnerability (CVSS 4.3) in Mozilla Seamonkey, published February 17, 2014. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 7.70%, the 94th percentile. No source names a fixed version.

References

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