| Título | tallcms 4.8.0 Code Injection |
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| Descrição | TallCMS v4.8.0 is affected by an improper authorization vulnerability in the PluginManager plugin upload and installation functionality. The plugin install/update action only checks whether plugin uploads are enabled through `tallcms.plugins.allow_uploads`, which defaults to `true`, and does not enforce the `super_admin` role required for code-package installation. Any authenticated backend user granted the `View:PluginManager` permission can upload and install a crafted plugin ZIP containing arbitrary PHP code. During installation, the package is extracted, registered for PSR-4 autoloading, and its declared classes and service provider are loaded without sandboxing. Using the supplied `test-fixed-1.0.1.zip` package, the installed middleware evaluates the attacker-controlled `X-TEST` request header; sending `X-TEST: system('id');` returns `uid=33(www-data) gid=33(www-data) groups=33(www-data)`, confirming remote code execution as the Web server user. Successful exploitation may allow reading application secrets such as `APP_KEY` and database credentials, modifying application data, installing persistence, and compromising the server within the Web process privileges. |
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| Fonte | ⚠️ https://github.com/tallcms/tallcms/issues/122 |
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| Utilizador | liaoxijun100 (UID 101246) |
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| Submissão | 15/09/2026 09h38 (há 20 dias) |
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| Moderação | 05/10/2026 11h11 (20 days later) |
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| Estado | Aceite |
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| Entrada VulDB | 413543 [TallCMS até 4.8.0 PluginManager ThemeManager.php Elevação de Privilégios] |
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| Pontos | 20 |
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