How severe is CVE-2013-6674?

CVE-2013-6674 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2013-6674 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 8% (94th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2013-6674?

CVE-2013-6674 primarily affects Mozilla Seamonkey. In total, 157 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2013-6674?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2013-6674 published?

CVE-2013-6674 was published on 2014-02-17 and last updated on 2026-06-17.

CVE-2013-6674

CVE-2013-6674 is a medium-severity vulnerability in Mozilla Seamonkey with a CVSS 2.0 base score of 4.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 2.0 base score 4.3)
EPSS exploit prediction: 8% (94th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Mozilla Seamonkey
Published: 2014-02-17
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2013-6674?: 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.
How severe is CVE-2013-6674?: CVE-2013-6674 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2013-6674 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 8% (94th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2013-6674?: CVE-2013-6674 primarily affects Mozilla Seamonkey. In total, 157 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2013-6674?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2013-6674 published?: CVE-2013-6674 was published on 2014-02-17 and last updated on 2026-06-17.

References

Affected products (157)

cpe:2.3:a:mozilla:seamonkey:*:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:seamonkey:*:beta3:*:*:*:*:*:*
cpe:2.3:a:mozilla:seamonkey:1.0:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:seamonkey:1.0:alpha:*:*:*:*:*:*
cpe:2.3:a:mozilla:seamonkey:1.0:beta:*:*:*:*:*:*
cpe:2.3:a:mozilla:seamonkey:1.0.1:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:seamonkey:1.0.2:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:seamonkey:1.0.3:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:seamonkey:1.0.4:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:seamonkey:1.0.5:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:seamonkey:1.0.6:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:seamonkey:1.0.7:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:seamonkey:1.0.8:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:seamonkey:1.0.9:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:seamonkey:1.1:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:seamonkey:1.1:alpha:*:*:*:*:*:*
cpe:2.3:a:mozilla:seamonkey:1.1:beta:*:*:*:*:*:*
cpe:2.3:a:mozilla:seamonkey:1.1.1:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:seamonkey:1.1.2:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:seamonkey:1.1.3:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:seamonkey:1.1.4:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:seamonkey:1.1.5:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:seamonkey:1.1.6:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:seamonkey:1.1.7:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:seamonkey:1.1.8:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:seamonkey:1.1.9:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:seamonkey:1.1.10:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:seamonkey:1.1.11:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:seamonkey:1.1.12:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:seamonkey:1.1.13:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:seamonkey:1.1.14:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:seamonkey:1.1.15:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:seamonkey:1.1.16:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:seamonkey:1.1.17:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:seamonkey:1.1.18:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:seamonkey:1.1.19:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:seamonkey:1.5.0.8:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:seamonkey:1.5.0.9:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:seamonkey:1.5.0.10:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:seamonkey:2.0:*:*:*:*:*:*:*

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