How severe is CVE-2023-45746?

CVE-2023-45746 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2023-45746 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (27th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-45746?

CVE-2023-45746 primarily affects Sixapart Movable Type. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-45746?

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

When was CVE-2023-45746 published?

CVE-2023-45746 was published on 2023-10-30 and last updated on 2026-06-17.

CVE-2023-45746

CVE-2023-45746 is a medium-severity vulnerability in Sixapart Movable Type with a CVSS 3.x base score of 5.4. 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 3.x base score 5.4)
EPSS exploit prediction: 0% (27th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Sixapart Movable Type
Published: 2023-10-30
Last modified: 2026-06-17

Description

Cross-site scripting vulnerability in Movable Type series allows a remote authenticated attacker to inject an arbitrary script. Affected products/versions are as follows: Movable Type 7 r.5405 and earlier (Movable Type 7 Series), Movable Type Advanced 7 r.5405 and earlier (Movable Type 7 Series), Movable Type Premium 1.58 and earlier, Movable Type Premium Advanced 1.58 and earlier, Movable Type Cloud Edition (Version 7) r.5405 and earlier, and Movable Type Premium Cloud Edition 1.58 and earlier.

Frequently asked questions

What is CVE-2023-45746?: Cross-site scripting vulnerability in Movable Type series allows a remote authenticated attacker to inject an arbitrary script. Affected products/versions are as follows: Movable Type 7 r.5405 and earlier (Movable Type 7 Series), Movable Type Advanced 7 r.5405 and earlier (Movable Type 7 Series), Movable Type Premium 1.58 and earlier, Movable Type Premium Advanced 1.58 and earlier, Movable Type Cloud Edition (Version 7) r.5405 and earlier, and Movable Type Premium Cloud Edition 1.58 and earlier.
How severe is CVE-2023-45746?: CVE-2023-45746 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2023-45746 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (27th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-45746?: CVE-2023-45746 primarily affects Sixapart Movable Type. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-45746?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-45746 published?: CVE-2023-45746 was published on 2023-10-30 and last updated on 2026-06-17.

References

Affected products (6)

cpe:2.3:a:sixapart:movable_type:*:*:*:*:*:*:*:*
cpe:2.3:a:sixapart:movable_type:*:*:*:*:advanced:*:*:*
cpe:2.3:a:sixapart:movable_type:*:*:*:*:premium:*:*:*
cpe:2.3:a:sixapart:movable_type:*:*:*:*:premium_advanced:*:*:*
cpe:2.3:a:sixapart:movable_type:*:*:*:*:aws:*:*:*
cpe:2.3:a:sixapart:movable_type:*:*:*:*:advanced_aws:*:*:*

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