CVE-2025-54856Movable Type contains a stored cross-site scripting vulnerability in Edit ContentData page.
Updated under an hour ago ()
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It affects Six Apart Ltd. Movable Type (Software Edition) and 5 other products. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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Movable Type contains a stored cross-site scripting vulnerability in Edit ContentData page. If crafted input is stored by an attacker with "ContentType Management" privilege, an arbitrary script may be executed on the web browser of the user who accesses Edit ContentData page.
- CVSS
- 4.6 MEDIUM (v4.0, CNA)CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
- Weakness (CWE)
- CWE-79
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- jpcert
- NVD analysis
- Deferred
- Record last updated
- Oct 23, 2025
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Six Apart Ltd. Movable Type (Software Edition) six_apart:movable_type_software_edition (from the name) | 8.4.0 to 8.4.3 (8.4 series); 8.0.0 to 8.0.7 (8.0 series); 7 r.5509 and earlier (7 series) | CNA record |
Six Apart Ltd. Movable Type Advanced (Software Edition) six_apart:movable_type_advanced_software_edition (from the name) | 8.4.0 to 8.4.3 (8.4 series); 8.0.0 to 8.0.7 (8.0 series); 7 r.5509 and earlier (7 series) | CNA record |
Six Apart Ltd. Movable Type Premium (Software Edition) six_apart:movable_type_premium_software_edition (from the name) | 2.10 and earlier (2 series); 1.67 and earlier (1 series) | CNA record |
Six Apart Ltd. Movable Type Premium (Advanced Edition) (Software Edition) six_apart:movable_type_premium_advanced_edition_software_edition (from the name) | 2.10 and earlier (2 series); 1.67 and earlier (1 series) | CNA record |
Six Apart Ltd. Movable Type (Cloud Edition) six_apart:movable_type_cloud_edition (from the name) | 8.7.0 (8 series); 7 r.5509 (7 series) | CNA record |
Six Apart Ltd. Movable Type Premium (Cloud Edition) six_apart:movable_type_premium_cloud_edition (from the name) | 2.10 (2 series); 1.67 (1 series) | CNA record |
References
- https://movabletype.org/news/2025/10/mt-880-released.html
- https://www.sixapart.jp/movabletype/news/2025/10/22-1055.html
- https://jvn.jp/en/jp/JVN24333679/
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.