CVE-2007-3342

CVE-2007-3342 is a medium-severity vulnerability in Six Apart Movable Type 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.

Key facts

Description

Multiple cross-site scripting (XSS) vulnerabilities in Movable Type (MT) before 3.34 allow remote attackers to inject arbitrary web script or HTML via comments that have (1) a malformed SGML numeric character reference with a '\0' (0x00) character in a javascript: URI or (2) an attribute in an element that lacks the '>' character at the end of the start tag, a different vulnerability than CVE-2007-0231.

Frequently asked questions

What is CVE-2007-3342?
Multiple cross-site scripting (XSS) vulnerabilities in Movable Type (MT) before 3.34 allow remote attackers to inject arbitrary web script or HTML via comments that have (1) a malformed SGML numeric character reference with a '\0' (0x00) character in a javascript: URI or (2) an attribute in an element that lacks the '>' character at the end of the start tag, a different vulnerability than CVE-2007-0231.
How severe is CVE-2007-3342?
CVE-2007-3342 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2007-3342 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (60th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2007-3342?
CVE-2007-3342 affects Six Apart Movable Type. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2007-3342?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2007-3342 published?
CVE-2007-3342 was published on 2007-06-21 and last updated on 2026-06-16.

References

Affected products (1)

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