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Q1What is this vulnerability? (Essence + Consequences)
🚨 **Essence**: CraftCMS 3 vCard Plugin 1.0.0 suffers from a **Deserialization Vulnerability**. 💥 **Consequences**: Attackers can execute **Arbitrary PHP Code** on the server.…
🛡️ **Root Cause**: **CWE-502** (Deserialization of Untrusted Data). The plugin fails to properly validate or sanitize data before processing it via PHP's `unserialize()`, allowing malicious payloads to be injected.
Q3Who is affected? (Versions/Components)
📦 **Affected**: **CraftCMS 3** users running the **vCard Plugin version 1.0.0**. Developed by Nathaniel Hammond. Only this specific version is flagged as vulnerable in the advisory.
Q4What can hackers do? (Privileges/Data)
🔓 **Attacker Capabilities**: Full **Remote Code Execution (RCE)**. Hackers gain the ability to run arbitrary PHP commands.…
⚡ **Exploitation Threshold**: **LOW**. The CVSS vector shows **AV:N** (Network), **AC:L** (Low Complexity), **PR:N** (No Privileges Required), and **UI:N** (No User Interaction).…
💣 **Public Exploit**: **YES**. Exploit code is available on **ExploitDB (ID: 48492)** and disclosed by researchers on **GitLab**. Wild exploitation is highly likely given the low barrier to entry.
Q7How to self-check? (Features/Scanning)
🔍 **Self-Check**: Scan your CraftCMS installation for the **vCard Plugin**. Check if the installed version is exactly **1.0.0**.…
🩹 **Official Fix**: The vendor is **CraftCMS**. The advisory links to the official plugin page. You must update the vCard Plugin to a patched version (post-1.0.0) or disable it immediately.…