CVE-2026-117687

Published Nov 12, 2026

Last updated a day ago

CVSS medium 6.9
Movable Type

Overview

AI description

Automated description summarized from trusted sources.

CVE-2026-117687 is a code injection vulnerability identified in Movable Type, a content management system developed by Six Apart Ltd. The flaw resides within the platform's Dynamic Publishing functionality. By sending a specially crafted request that is processed by this feature, an attacker can execute arbitrary PHP code on the server hosting the affected product. The vulnerability affects several versions of the software, including Movable Type 8.8.6 and earlier, 8.0.13 and earlier, and Movable Type Premium 2.18 and earlier, as well as older unsupported versions like Movable Type 7. Movable Type 9 is not affected. To address the issue, users are advised to update to patched versions (such as 8.8.7, 8.0.14, or Premium 2.19) or configure the environment variable `DynamicTemplateAllowPHP` to `0` to prevent PHP code execution within design templates.

Description
Movable Type provided by Six Apart Ltd. contains a code injection vulnerability in its Dynamic Publishing functionality. By sending a specially crafted request that is processed by the Dynamic Publishing, an attacker may be able to execute arbitrary PHP code on the affected product.
Source
vultures@jpcert.or.jp
NVD status
Deferred

Risk scores

CVSS 4.0

Type
Secondary
Base score
6.9
Impact score
-
Exploitability score
-
Vector string
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/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
Severity
MEDIUM

CVSS 3.0

Type
Secondary
Base score
7.3
Impact score
3.4
Exploitability score
3.9
Vector string
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Severity
HIGH

Weaknesses

vultures@jpcert.or.jp
CWE-94

Social media

Hype score is a measure of social media activity compared against trending CVEs from the past 12 months. Max score 100.

Hype score

6