CVE-2026-25776
Summary
| CVE | CVE-2026-25776 |
|---|---|
| State | PUBLISHED |
| Assigner | jpcert |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-04-08 09:16:20 UTC |
| Updated | 2026-04-20 17:21:58 UTC |
| Description | Movable Type provided by Six Apart Ltd. contains a code injection vulnerability which may allow an attacker to execute arbitrary Perl script. |
Risk And Classification
Primary CVSS: v4.0 9.3 CRITICAL from [email protected]
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
EPSS: 0.000640000 probability, percentile 0.199350000 (date 2026-04-14)
Problem Types: CWE-94 | CWE-94 Code injection
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 4.0 | [email protected] | Secondary | 9.3 | CRITICAL | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/C... |
| 4.0 | CNA | CVSS | 9.3 | CRITICAL | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N |
| 3.0 | [email protected] | Secondary | 9.8 | CRITICAL | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| 3.0 | CNA | CVSS | 9.8 | CRITICAL | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
CVSS v4.0 Breakdown
Attack Vector
NetworkAttack Complexity
LowAttack Requirements
NonePrivileges Required
NoneUser Interaction
NoneConfidentiality
HighIntegrity
HighAvailability
HighSub Conf.
NoneSub Integrity
NoneSub Availability
NoneCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS v3.0 Breakdown
Attack Vector
NetworkAttack Complexity
LowPrivileges Required
NoneUser Interaction
NoneScope
UnchangedConfidentiality
HighIntegrity
HighAvailability
HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD Known Affected Configurations (CPE 2.3)
| Type | Vendor | Product | Version | Update | Edition | Language |
|---|---|---|---|---|---|---|
| Application | Sixapart | Movable Type | All | All | All | All |
| Application | Sixapart | Movable Type | 9.0.5 | All | All | All |
| Application | Sixapart | Movable Type | 9.0.6 | All | All | All |
| Application | Sixapart | Movable Type | 9.1.0 | All | All | All |
| Application | Sixapart | Movable Type | All | All | All | All |
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Six Apart Ltd. | Movable Type | affected 9.1.0 and earlier | Not specified |
| CNA | Six Apart Ltd. | Movable Type | affected 9.0.6 and earlier | Not specified |
| CNA | Six Apart Ltd. | Movable Type | affected 8.8.2 and earlier | Not specified |
| CNA | Six Apart Ltd. | Movable Type | affected 8.0.9 and earlier | Not specified |
| CNA | Six Apart Ltd. | Movable Type Advanced | affected 9.1.0 and earlier | Not specified |
| CNA | Six Apart Ltd. | Movable Type Advanced | affected 9.0.6 and earlier | Not specified |
| CNA | Six Apart Ltd. | Movable Type Advanced | affected 8.8.2 and earlier | Not specified |
| CNA | Six Apart Ltd. | Movable Type Advanced | affected 8.0.9 and earlier | Not specified |
| CNA | Six Apart Ltd. | Movable Type Premium | affected 9.1.0 and earlier | Not specified |
| CNA | Six Apart Ltd. | Movable Type Premium | affected 9.0.6 and earlier | Not specified |
| CNA | Six Apart Ltd. | Movable Type Premium Advanced Edition | affected 9.1.0 and earlier | Not specified |
| CNA | Six Apart Ltd. | Movable Type Premium Advanced Edition | affected 9.0.6 and earlier | Not specified |
| CNA | Six Apart Ltd. | Movable Type Premium | affected 2.14 and earlier | Not specified |
| CNA | Six Apart Ltd. | Movable Type Premium Advanced Edition | affected 2.14 and earlier | Not specified |
| CNA | Six Apart Ltd. | Movable Type Premium MT8-based | affected 2.14 and earlier | Not specified |
| CNA | Six Apart Ltd. | Movable Type | affected 5.1 to 5.18 | Not specified |
| CNA | Six Apart Ltd. | Movable Type | affected 5.2 | Not specified |
| CNA | Six Apart Ltd. | Movable Type | affected 5.2.1 to 5.2.13 | Not specified |
| CNA | Six Apart Ltd. | Movable Type | affected 6.0 | Not specified |
| CNA | Six Apart Ltd. | Movable Type | affected 6.0.1 to 6.8.8 | Not specified |
| CNA | Six Apart Ltd. | Movable Type | affected 7 r.4207 to r.5510 | Not specified |
| CNA | Six Apart Ltd. | Movable Type | affected 8.4.0 to 8.4.4 | Not specified |
| CNA | Six Apart Ltd. | Movable Type | affected 1.0 to 1.68 | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| jvn.jp/en/jp/JVN66473735 | [email protected] | jvn.jp | Third Party Advisory |
| www.sixapart.jp/movabletype/news/2026/04/08-1100.html | [email protected] | www.sixapart.jp | Vendor Advisory |
| movabletype.org/news/2026/04/mt-907-released.html | [email protected] | movabletype.org | Vendor Advisory |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.