How severe is CVE-2008-4634?

CVE-2008-4634 has a CVSS 2.0 base score of 3.5, rated low severity.

Is CVE-2008-4634 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (59th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2008-4634?

CVE-2008-4634 primarily affects Six Apart Movable Type. In total, 8 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2008-4634?

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

When was CVE-2008-4634 published?

CVE-2008-4634 was published on 2008-10-21 and last updated on 2026-06-16.

CVE-2008-4634

CVE-2008-4634 is a low-severity vulnerability in Six Apart Movable Type with a CVSS 2.0 base score of 3.5. 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: Low (CVSS 2.0 base score 3.5)
EPSS exploit prediction: 1% (59th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Six Apart Movable Type
Published: 2008-10-21
Last modified: 2026-06-16

Description

Cross-site scripting (XSS) vulnerability in Movable Type 4 through 4.21 allows remote attackers to inject arbitrary web script or HTML via unknown vectors related to the administrative page, a different vulnerability than CVE-2008-4079.

Frequently asked questions

What is CVE-2008-4634?: Cross-site scripting (XSS) vulnerability in Movable Type 4 through 4.21 allows remote attackers to inject arbitrary web script or HTML via unknown vectors related to the administrative page, a different vulnerability than CVE-2008-4079.
How severe is CVE-2008-4634?: CVE-2008-4634 has a CVSS 2.0 base score of 3.5, rated low severity.
Is CVE-2008-4634 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (59th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2008-4634?: CVE-2008-4634 primarily affects Six Apart Movable Type. In total, 8 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2008-4634?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2008-4634 published?: CVE-2008-4634 was published on 2008-10-21 and last updated on 2026-06-16.

References

Affected products (8)

cpe:2.3:a:six_apart:movable_type:4:*:*:*:*:*:*:*
cpe:2.3:a:six_apart:movable_type:4:unknown:community_solution:*:*:*:*:*
cpe:2.3:a:six_apart:movable_type:4:unknown:enterprise:*:*:*:*:*
cpe:2.3:a:six_apart:movable_type:4:unknown:open_source:*:*:*:*:*
cpe:2.3:a:six_apart:movable_type:4.20:*:*:*:*:*:*:*
cpe:2.3:a:six_apart:movable_type:4.20:unknown:community_solution:*:*:*:*:*
cpe:2.3:a:six_apart:movable_type:4.20:unknown:enterprise:*:*:*:*:*
cpe:2.3:a:six_apart:movable_type:4.20:unknown:open_source:*:*:*:*:*

More vulnerabilities in Six Apart Movable Type

CVE-2007-0231 — Medium (CVSS 6.8): Cross-site scripting (XSS) vulnerability in Movable Type (MT) 3.33, when nofollow is disabled and unmoderated comments…
CVE-2003-0287 — Medium (CVSS 6.8): Cross-site scripting (XSS) vulnerability in Movable Type before 2.6, and possibly other versions including 2.63, allows…
CVE-2009-2481 — Medium (CVSS 5.8): mt-wizard.cgi in Six Apart Movable Type before 4.261, when global templates are not initialized, allows remote…
CVE-2005-3101 — Medium (CVSS 5.0): The password reset feature in Movable Type before 3.2 generates different error messages depending on whether a user…
CVE-2008-5808 — Medium (CVSS 4.3): Cross-site scripting (XSS) vulnerability in Six Apart Movable Type Enterprise (MTE) 1.x before 1.56; Movable Type (MT)…
CVE-2008-4079 — Medium (CVSS 4.3): Cross-site scripting (XSS) vulnerability in Movable Type (MT) 4.x through 4.20, and 3.36 and earlier; Movable Type…

All CVEs affecting Six Apart Movable Type →

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