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CVE-2026-25776

Severity CVSS v4.0:
CRITICAL
Type:
CWE-94 Code Injection
Publication date:
08/04/2026
Last modified:
20/04/2026

Description

Movable Type provided by Six Apart Ltd. contains a code injection vulnerability which may allow an attacker to execute arbitrary Perl script.

Impact

Vector 4.0
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 CVSS v4.0 Severity and Metrics:

Base Score: 9.30 CRITICAL
Vector: 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

Attack Vector (AV): Network
Attack Complexity (AC): Low
Attack Requirements (AT): None
Privileges Required (PR): None
User Interaction (UI): None
Confidentiality (VC): High
Integrity (VI): High
Availability (VA): High
Confidentiality (SC): None
Integrity (SI): None
Availability (SA): None

Base Score 4.0
9.30
Severity 4.0
CRITICAL
Vector 3.x
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 9.80 CRITICAL
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x
9.80
Severity 3.x
CRITICAL

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:sixapart:movable_type:*:*:*:*:premium_advanced:*:*:* 2.14 (including)
cpe:2.3:a:sixapart:movable_type:9.0.5:*:*:*:premium_advanced:*:*:*
cpe:2.3:a:sixapart:movable_type:9.0.6:*:*:*:premium_advanced:*:*:*
cpe:2.3:a:sixapart:movable_type:9.1.0:*:*:*:premium_advanced:*:*:*
cpe:2.3:a:sixapart:movable_type:*:*:*:*:advanced:*:*:* 8.0.2 (including) 8.0.10 (excluding)
cpe:2.3:a:sixapart:movable_type:*:*:*:*:advanced:*:*:* 8.8.0 (including) 8.8.3 (excluding)
cpe:2.3:a:sixapart:movable_type:*:*:*:*:advanced:*:*:* 9.0.1 (including) 9.0.7 (excluding)
cpe:2.3:a:sixapart:movable_type:9.1.0:*:*:*:advanced:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools