CVE-2026-28496-Lab

CVE-2026-28496 - FOSSBilling 服务器端模板注入（Twig 渲染） 概述 本仓库包含一个本地 Docker 实验环境，用于复现和验证 CVE-2026-28496，这是一个影响 FOSSBilling 的 Twig 模板渲染行为的服务器端模板注入漏洞。 FOSSBilling 是一个免费开源的开票和客户管理平台。0.8.0 之前的版本受到不安全的 Twig 模板渲染行为影响，该行为可以评估提供的模板表达式。本实验使用 FOSSBilling 0.8.0 作为已修补的比较目标。 本实验比较两个 FOSSBilling 版本： 服务| FOSSBilling 版本|...

Information Exposure

Overview getgrav/grav is a Modern, Crazy Fast, Ridiculously Easy and Amazingly Powerful Flat-File CMS. Affected versions of this package are vulnerable to Information Exposure in the Twig rendering process. An attacker can access sensitive configuration values by leveraging page-content edit...

CVE-2026-52889 Formie: Server-Side Template Injection in Formie Hidden field defaults

Formie is a Craft CMS plugin for creating forms. Prior to 3.1.27, Formie can pass request-derived Hidden field defaults such as HTTP User Agent, Referer URL, Current URL, Current URL without Query String, Query Parameter, and Cookie Value to Craft's Twig rendering layer during front-end form...

CVE-2026-71291

Bolt CMS renders content field values through Twig's full application-level Environment with no SandboxExtension registered anywhere in the codebase. In src/Entity/Field.php, getTwigValue calls shouldBeRenderedAsTwig, which gates rendering only on the field definition's allowtwig flag and a regex...

CVE-2026-71291

Bolt CMS renders content field values through Twig's full application-level Environment with no SandboxExtension registered anywhere in the codebase. In src/Entity/Field.php, getTwigValue calls shouldBeRenderedAsTwig, which gates rendering only on the field definition's allowtwig flag and a regex...

CVE-2026-71291

Bolt CMS is affected by a server-side template injection: content fields rendered by Twig are not sandboxed. In Field.php, getTwigValue() renders raw values when shouldBeRenderedAsTwig passes checks (field allow_twig flag and a {{, {%, or # regex), using Twig without sandboxing via createTemplate...

CVE-2026-71291 Bolt CMS Server-Side Template Injection via Unsandboxed allow_twig Field Rendering

Bolt CMS renders content field values through Twig's full application-level Environment with no SandboxExtension registered anywhere in the codebase. In src/Entity/Field.php, getTwigValue calls shouldBeRenderedAsTwig, which gates rendering only on the field definition's allowtwig flag and a regex...

CVE-2026-71291 Bolt CMS Server-Side Template Injection via Unsandboxed allow_twig Field Rendering

Bolt CMS renders content field values through Twig's full application-level Environment with no SandboxExtension registered anywhere in the codebase. In src/Entity/Field.php, getTwigValue calls shouldBeRenderedAsTwig, which gates rendering only on the field definition's allowtwig flag and a regex...

EUVD-2026-53376

Bolt CMS renders content field values through Twig's full application-level Environment with no SandboxExtension registered anywhere in the codebase. In src/Entity/Field.php, getTwigValue calls shouldBeRenderedAsTwig, which gates rendering only on the field definition's allowtwig flag and a regex...

CVE-2026-61873 Grav before 9.1.8 Arbitrary File Write via Twig-Processed Filename

Grav before 9.1.8 contains an arbitrary file write vulnerability in the Form plugin's process.save.filename parameter, which is validated against path traversal before Twig processing but never re-validated after rendering. Attackers can submit form data containing path traversal sequences that a...

CVE-2026-61873

Grav before 9.1.8 contains an arbitrary file write vulnerability in the Form plugin's process.save.filename parameter, which is validated against path traversal before Twig processing but never re-validated after rendering. Attackers can submit form data containing path traversal sequences that a...

CVE-2026-61873

Grav before 9.1.8 is affected by an arbitrary file write in the Form plugin via the process.save.filename parameter. The parameter is path-traversal validated before Twig processing but not re-validated after rendering, enabling an attacker to submit form data that writes arbitrary files (includi...

Formie Hidden field defaults vulnerable to Server-Side Template Injection

Summary Formie Hidden fields could evaluate request-derived values as Twig during front-end form rendering. When a Hidden field used a dynamic default value such as HTTP User Agent, Referer URL, Current URL, Query Parameter, or Cookie Value, the value was copied from the incoming request and late...

PT-2026-56052

Name of the Vulnerable Software and Affected Versions Formie versions 3.0.0-beta.1 through 3.1.26 Description Formie allows request-derived Hidden field defaults to be passed to the Twig rendering layer during front-end form rendering. An unauthenticated attacker can inject Twig syntax into...

Exploit for CVE-2026-28496

CVE-2026-28496 - FOSSBilling Server-Side Template Injection in...

VulnCheck KEV: CVE-2026-28496

FOSSBilling is a free, open-source billing and client management system. Versions prior to 0.8.0 have a Server-Side Template Injection SSTI vulnerability in the template rendering system. Administrators with access to features that render Twig templates email templates, mass mail campaigns, custo...

CVE-2026-28496

FOSSBilling is a free, open-source billing and client management system. Versions prior to 0.8.0 have a Server-Side Template Injection SSTI vulnerability in the template rendering system. Administrators with access to features that render Twig templates email templates, mass mail campaigns, custo...

CVE-2026-28496 FOSSBilling: Server-side template injection in Twig template rendering enables information disclosure and RCE

FOSSBilling is a free, open-source billing and client management system. Versions prior to 0.8.0 have a Server-Side Template Injection SSTI vulnerability in the template rendering system. Administrators with access to features that render Twig templates email templates, mass mail campaigns, custo...

CVE-2026-28496

CVE-2026-28496 – FOSSBilling SSTI in Twig rendering affects versions prior to 0.8.0. Administrators with access to Twig-rendering features (email templates, mass mail campaigns, custom payment adapters, and the string_render API) can inject Twig expressions, leading to information disclosure and ...

CVE-2026-28496 FOSSBilling: Server-side template injection in Twig template rendering enables information disclosure and RCE

FOSSBilling is a free, open-source billing and client management system. Versions prior to 0.8.0 have a Server-Side Template Injection SSTI vulnerability in the template rendering system. Administrators with access to features that render Twig templates email templates, mass mail campaigns, custo...