CVE-2026-28496— FOSSBilling Twig模板注入导致信息泄露和RCE漏洞
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一、 漏洞 CVE-2026-28496 基础信息
漏洞信息
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Vulnerability Title
FOSSBilling: Server-side template injection in Twig template rendering enables information disclosure and RCE
来源: 美国国家漏洞数据库 NVD
Vulnerability Description
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, custom payment adapters, and the `string_render` API endpoint) can inject arbitrary Twig expressions, leading to information disclosure and remote code execution. The vulnerability exists because Twig templates are rendered without a sandbox, allowing access to the full Twig environment, API context, and the application's dependency injection container. Version 0.8.0 patches the issue. Some workarounds are available. Audit existing email templates for suspicious Twig expressions, rotate all admin and client API tokens, and/or block external access to /api/system/* at reverse proxy/WAF to mitigate chaining with GHSA-78x5-c8gw-8279.
来源: 美国国家漏洞数据库 NVD
CVSS Information
N/A
来源: 美国国家漏洞数据库 NVD
Vulnerability Type
CWE-1336
来源: 美国国家漏洞数据库 NVD
受影响产品
| 厂商 | 产品 | 影响版本 | CPE | 订阅 |
|---|---|---|---|---|
| FOSSBilling | FOSSBilling | < 0.8.0 | - |
二、漏洞 CVE-2026-28496 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|---|---|---|
| 1 | A Server-Side Template Injection (SSTI) vulnerability exists in FOSSBilling's template rendering system. Administrators with access to features that render Twig templates (email templates, mass mail campaigns, custom payment adapters, and the string_render API endpoint) can inject arbitrary Twig expressions, leading to information disclosure and remote code execution. The vulnerability exists because Twig templates are rendered without a sandbox, allowing access to the full Twig environment, API context, and the application's dependency injection container. | https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2026/CVE-2026-28496.yaml | POC详情 |
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CVE-2026-28496 其他参考 (2)
同批安全公告 · FOSSBilling · 2026-06-23 · 共 4 条
| CVE-2026-27604 | FOSSBilling系统API角色验证缺陷致越权 | |
| CVE-2026-23513 | FOSSBilling 客户端交易和订单列表存在授权破坏漏洞 | |
| CVE-2025-64105 | FOSSBilling 支持工单创建存在 IDOR 漏洞 |
IV. Related Vulnerabilities
V. Comments for CVE-2026-28496
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