CVE-2026-25776

Received

Published: 08 Apr 2026, 08:52

Last modified:08 Apr 2026, 13:22

Vulnerability Summary

Overall Risk (default)

high

70/100

CVSS Score

9.8 CRITICAL

v3.0 (cve.org)

EPSS Score

0.05% LOW

0% probability

KEV

Not listed

Ransomware

No reports

Public exploits

None found

Dark Web

Not detected

08 Apr 2026, 08:52

Published

Vulnerability first disclosed

08 Apr 2026, 13:22

Last Modified

Vulnerability information updated

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

v4.0•CRITICAL•Score: 9.3CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
v4.0•CRITICAL•Score: 9.3CVSS: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
v3.0•CRITICAL•Score: 9.8CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Current EPSS score: 0.05%• Percentile: 15%

CWE-94•Improper Control of Generation of Code ('Code Injection')
The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.

six apart ltd.•movable type
9.1.0 and earlier | 9.0.6 and earlier | 8.8.2 and earlier | 8.0.9 and earlier | 5.1 to 5.18 | 5.2 | 5.2.1 to 5.2.13 | 6.0 | 6.0.1 to 6.8.8 | 7 r.4207 to r.5510 | 8.4.0 to 8.4.4 | 1.0 to 1.68
six apart ltd.•movable type advanced
9.1.0 and earlier | 9.0.6 and earlier | 8.8.2 and earlier | 8.0.9 and earlier
six apart ltd.•movable type premium
9.1.0 and earlier | 9.0.6 and earlier | 2.14 and earlier
six apart ltd.•movable type premium advanced edition
9.1.0 and earlier | 9.0.6 and earlier | 2.14 and earlier
six apart ltd.•movable type premium (mt8-based)
2.14 and earlier