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CVE-2026-115189

Quick assessment

Affected
CVE-2026-115189
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Mautic 的 Twig 主题渲染沙箱中存在服务端模板注入漏洞。该沙箱原本旨在限制用户上传的主题模板（作为对 GHSA-9fx4-7cmj-47vg 漏洞的修复措施），但其限制并未得到完全执行，导致精心构造的主题模板能够逃逸沙箱。拥有 权限的已认证用户可以上传恶意主题，当该主题的模板被渲染时，将在服务器上以 Web 服务器进程的权限执行任意代码。攻击者借此可执行操作系统命令、读取服务器端文件（包括配置文件和数据库凭证）、写入文件，并访问内部服务。在默认安装中， 权限授予管理员角色；在多操作员部署环境中，该权限也可

CVSS 8.8 · High EPSS 0.59% · P48

I. Basic Information for CVE-2026-115189

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A server-side template injection vulnerability exists in the Twig theme rendering sandbox of Mautic. The sandbox introduced to restrict user-uploaded theme templates (the fix for GHSA-9fx4-7cmj-47vg) does not fully enforce its restrictions, allowing a crafted theme template to escape the sandbox. An authenticated user with the core:themes:create permission can upload a malicious theme whose template is later rendered, resulting in execution of arbitrary code on the server with the privileges of the web server process. This allows the attacker to execute operating system commands, read server-side files including configuration files and database credentials, write files, and reach internal services. In default installations the core:themes:create permission is granted to the Administrator role, and in multi-operator setups it may be delegated to other roles. This is an incomplete fix for GHSA-9fx4-7cmj-47vg.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
CWE-1336
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
- - 1.3.0 ~ 5.2.12 -

II. Public POCs for CVE-2026-115189

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III. Intelligence Information for CVE-2026-115189

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Vendor Advisories for CVE-2026-115189 (1)

IV. Related Vulnerabilities

Same weakness: CWE-1336