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Q1What is this vulnerability? (Essence + Consequences)
🚨 **Essence**: Arbitrary File Upload vulnerability in Smallerik File Browser.…
🛡️ **Root Cause**: **CWE-434** (Unrestricted Upload of File with Dangerous Type). The plugin fails to validate file extensions or content types before saving uploads. ⚠️ No sanitization or allow-listing implemented.
Q3Who is affected? (Versions/Components)
📦 **Affected**: **Smallerik File Browser** WordPress Plugin. 📅 **Version**: 1.1 and earlier. 🏢 **Vendor**: Enrico Sandoli. Note: Core WordPress is not directly vulnerable, but the plugin integration is at risk.
Q4What can hackers do? (Privileges/Data)
🕵️ **Attacker Actions**: Upload PHP/JS shells. 🗝️ **Privileges**: Execute arbitrary code on the server. 📂 **Data**: Read/Write sensitive files, steal user data, or pivot to internal networks.…
🔓 **Threshold**: **Low** for Auth, **High** for Access. Requires **PR:L** (Low Privileges) – meaning the attacker needs a valid WordPress account (even subscriber level). No UI interaction needed (UI:N).…
🔍 **Self-Check**: 1. Scan for `Smallerik File Browser` plugin. 2. Check version <= 1.1. 3. Look for upload endpoints in the plugin. 4. Test if `.php` files can be uploaded via the file browser interface.…
🩹 **Fix Status**: Patch available via vendor/patchstack. 📝 **Action**: Update to the latest version immediately. Check the official WordPress repository or vendor site for the patched release.…
🔥 **Urgency**: **HIGH**. CVSS Vector indicates High Impact (C:H, I:H, A:H). Even with PR:L, the ease of exploitation (AC:L) makes it dangerous. 🚀 **Priority**: Patch immediately or disable the plugin to prevent RCE.…