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CVE Vulnerability Details :
CVE-2026-24447
PUBLISHED
More InfoOfficial Page
Assigner-jpcert
Assigner Org ID-ede6fdc4-6654-4307-a26d-3331c018e2ce
View Known Exploited Vulnerability (KEV) details
Published At-04 Feb, 2026 | 07:04
Updated At-04 Feb, 2026 | 15:55
Rejected At-
▼CVE Numbering Authority (CNA)

If a malformed data is input to the affected product, a CSV file downloaded from the affected product may contain such malformed data. When a victim user download and open such a CSV file, the embedded code may be executed in the user's environment. Note that Movable Type 7 series and 8.4 series, which are End-of-Life (EOL), are affected by the vulnerability as well.

Affected Products
Vendor
Six Apart Ltd.
Product
Movable Type (Software Edition)
Versions
Affected
  • 9.0.4 to 9.0.5 (9.0 series)
  • 8.8.0 to 8.8.1 (8.8 series)
  • 8.0.2 to 8.0.8 (8.0 series)
Vendor
Six Apart Ltd.
Product
Movable Type Advanced (Software Edition)
Versions
Affected
  • 9.0.4 to 9.0.5 (9.0 series)
  • 8.8.0 to 8.8.1 (8.8 series)
  • 8.0.2 to 8.0.8 (8.0 series)
Vendor
Six Apart Ltd.
Product
Movable Type Premium (Software Edition)
Versions
Affected
  • 9.0.4 (MTP 9.0 series)
  • 2.13 and earlier (MTP 2 series)
Vendor
Six Apart Ltd.
Product
Movable Type Premium (Advanced Edition) (Software Edition)
Versions
Affected
  • 9.0.4 (MTP 9.0 series)
  • 2.13 and earlier (MTP 2 series)
Vendor
Six Apart Ltd.
Product
Movable Type (Cloud Edition)
Versions
Affected
  • 9.0.5 (9 series)
  • 8.8.1 (8 series)
Vendor
Six Apart Ltd.
Product
Movable Type Premium (Cloud Edition)
Versions
Affected
  • 9.0.5 (9 series)
  • 2.12 (MTP 2 series)
Problem Types
TypeCWE IDDescription
CWECWE-1236Improper neutralization of formula elements in a CSV file
Type: CWE
CWE ID: CWE-1236
Description: Improper neutralization of formula elements in a CSV file
Metrics
VersionBase scoreBase severityVector
3.06.5MEDIUM
CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L
4.04.8MEDIUM
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:L
Version: 3.0
Base score: 6.5
Base severity: MEDIUM
Vector:
CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L
Version: 4.0
Base score: 4.8
Base severity: MEDIUM
Vector:
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:L
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://movabletype.org/news/2026/02/mt-906-released.html
N/A
https://www.sixapart.jp/movabletype/news/2026/02/04-1100.html
N/A
https://jvn.jp/en/jp/JVN45405689/
N/A
Hyperlink: https://movabletype.org/news/2026/02/mt-906-released.html
Resource: N/A
Hyperlink: https://www.sixapart.jp/movabletype/news/2026/02/04-1100.html
Resource: N/A
Hyperlink: https://jvn.jp/en/jp/JVN45405689/
Resource: N/A
▼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
Details not found