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Medium · 6.5 CVE-2026-24447 EUVD-2026-5509GHSA-2vrw-pcjq-fv9h

If a malformed data is input to the affected product, a CSV file downloaded from the affected product may contain such malformed data. When…

Published Feb 4, 2026 · Updated Feb 4, 2026 · Assigned by jpcert

Description

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

VendorProductAffectedFixed
Six Apart Movable Type (Software Edition) 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) —
Six Apart Movable Type Advanced (Software Edition) 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) —
Six Apart Movable Type Premium (Software Edition) 9.0.4 (MTP 9.0 series), 2.13 and earlier (MTP 2 series) —
Six Apart Movable Type Premium (Advanced Edition) (Software Edition) 9.0.4 (MTP 9.0 series), 2.13 and earlier (MTP 2 series) —
Six Apart Movable Type (Cloud Edition) 9.0.5 (9 series), 8.8.1 (8 series) —
Six Apart Movable Type Premium (Cloud Edition) 9.0.5 (9 series), 2.12 (MTP 2 series) —

References