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CVE-2026-65693— Microweber CMS 2.0.20 Server-Side Template Injection via Mail Templates

Quick assessment

Affected
microweber microweber
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.

Microweber是Microweber公司开源的一套可提供拖拽功能的网上商店管理系统。该系统包括添加商品、图片等模块。 Microweber 2.0.20及之前版本存在代码注入漏洞，该漏洞源于服务器端模板注入，未经沙箱化的Twig环境允许认证管理员通过注入Twig表达式到邮件模板中，导致任意OS命令执行。

CVSS 7.2 · High EPSS 0.48% · P41

Affected Version Matrix 1

VendorProduct Version RangeStatus
microweber microweber ≤ 2.0.20 affected
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I. Basic Information for CVE-2026-65693

Vulnerability Information
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Vulnerability Title
Microweber CMS 2.0.20 Server-Side Template Injection via Mail Templates
Source: CVE Program / CVE List V5
Vulnerability Description
Microweber CMS through 2.0.20 contains a server-side template injection vulnerability that allows authenticated administrators to achieve arbitrary OS command execution by injecting Twig expressions into mail templates. Attackers can exploit the unsandboxed Twig environment in TwigView::render(), which lacks SandboxExtension or a SecurityPolicy, to inject malicious expressions such as filter('system') into mail template bodies stored unsanitized in the database, causing automatic payload execution on each subsequent application event that triggers a mail dispatch.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
对生成代码的控制不恰当(代码注入)
Source: CVE Program / CVE List V5
Vulnerability Title
Microweber 代码注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Microweber是Microweber公司开源的一套可提供拖拽功能的网上商店管理系统。该系统包括添加商品、图片等模块。 Microweber 2.0.20及之前版本存在代码注入漏洞，该漏洞源于服务器端模板注入，未经沙箱化的Twig环境允许认证管理员通过注入Twig表达式到邮件模板中，导致任意OS命令执行。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
microweber microweber 0 ~ 2.0.20 -

II. Public POCs for CVE-2026-65693

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III. Intelligence Information for CVE-2026-65693

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Vendor Advisories for CVE-2026-65693 (1)

Proof of Concept for CVE-2026-65693 (1)

IV. Related Vulnerabilities

Same product: microweber
Same vendor: microweber
Same weakness: CWE-94

V. Comments for CVE-2026-65693

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