| Titolo | CodeLibs Fess 15.5.1 Arbitrary File Write |
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| Descrizione | The update() method in AdminDesignAction writes user-supplied content directly to a JSP file on disk after passing it through decodeJsp(). The filter only escapes <% %> scriptlet tags and <%= %> expression tags — JSP EL expressions (${}) are not touched at all. An attacker with the admin-design role can inject JSP EL expressions into content. EL expressions are evaluated by the JSP/Servlet container at render time and can invoke arbitrary Java methods, achieving Remote Code Execution. |
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| Fonte | ⚠️ https://bv3acdnplbr.feishu.cn/docx/Kk1tdEAfAoV6kZxVozUc8UA4nog?from=from_copylink |
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| Utente | R1ckyZ (UID 92331) |
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| Sottomissione | 14/04/2026 10:51 (4 mesi fa) |
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| Moderazione | 09/05/2026 08:09 (25 days later) |
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| Stato | Accettato |
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| Voce VulDB | 362419 [codelibs Fess fino a 15.5.1 JSP File AdminDesignAction.java update content escalationi di privilegi] |
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| Punti | 20 |
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