How severe is CVE-2008-5845?

CVE-2008-5845 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2008-5845 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-2008-5845?

CVE-2008-5845 primarily affects Sixapart Movable Type. In total, 17 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2008-5845?

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

When was CVE-2008-5845 published?

CVE-2008-5845 was published on 2009-01-05 and last updated on 2026-06-16.

CVE-2008-5845

CVE-2008-5845 is a medium-severity vulnerability in Sixapart 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. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 2.0 base score 4.3)
EPSS exploit prediction: 1% (60th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Sixapart Movable Type
Published: 2009-01-05
Last modified: 2026-06-16

Description

Multiple cross-site scripting (XSS) vulnerabilities in Six Apart Movable Type (MT) before 4.23 allow remote attackers to inject arbitrary web script or HTML via a (1) MTEntryAuthorUsername, (2) MTAuthorDisplayName, (3) MTEntryAuthorDisplayName, or (4) MTCommenterName field in a Profile View template; a (5) listing screen or (6) edit screen in the CMS app; (7) a TrackBack title, related to the HTML sanitization library; or (8) a user archive name (aka archive title) on a published Community Blog template.

Frequently asked questions

What is CVE-2008-5845?: Multiple cross-site scripting (XSS) vulnerabilities in Six Apart Movable Type (MT) before 4.23 allow remote attackers to inject arbitrary web script or HTML via a (1) MTEntryAuthorUsername, (2) MTAuthorDisplayName, (3) MTEntryAuthorDisplayName, or (4) MTCommenterName field in a Profile View template; a (5) listing screen or (6) edit screen in the CMS app; (7) a TrackBack title, related to the HTML sanitization library; or (8) a user archive name (aka archive title) on a published Community Blog template.
How severe is CVE-2008-5845?: CVE-2008-5845 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2008-5845 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-2008-5845?: CVE-2008-5845 primarily affects Sixapart Movable Type. In total, 17 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2008-5845?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2008-5845 published?: CVE-2008-5845 was published on 2009-01-05 and last updated on 2026-06-16.

References

Affected products (17)

cpe:2.3:a:sixapart:movable_type:*:*:*:*:*:*:*:*
cpe:2.3:a:sixapart:movable_type:3.0d:*:*:*:*:*:*:*
cpe:2.3:a:sixapart:movable_type:3.1:*:*:*:*:*:*:*
cpe:2.3:a:sixapart:movable_type:3.01d:*:*:*:*:*:*:*
cpe:2.3:a:sixapart:movable_type:3.2:*:*:*:*:*:*:*
cpe:2.3:a:sixapart:movable_type:3.3:*:*:*:*:*:*:*
cpe:2.3:a:sixapart:movable_type:3.11:*:*:*:*:*:*:*
cpe:2.3:a:sixapart:movable_type:3.12:*:*:*:*:*:*:*
cpe:2.3:a:sixapart:movable_type:3.14:*:*:*:*:*:*:*
cpe:2.3:a:sixapart:movable_type:3.15:*:*:*:*:*:*:*
cpe:2.3:a:sixapart:movable_type:3.16:*:*:*:*:*:*:*
cpe:2.3:a:sixapart:movable_type:3.17:*:*:*:*:*:*:*
cpe:2.3:a:sixapart:movable_type:3.32:*:*:*:*:*:*:*
cpe:2.3:a:sixapart:movable_type:3.33:*:*:*:*:*:*:*
cpe:2.3:a:sixapart:movable_type:3.34:*:*:*:*:*:*:*
cpe:2.3:a:sixapart:movable_type:3.35:*:*:*:*:*:*:*
cpe:2.3:a:sixapart:movable_type:4.2:*:*:*:*:*:*:*

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