Media

XSS in FieldPopupNewsletter Prestashop Module

Publicada: 07.09.2023
Actualizado: 11.10.2026 10:22

An XSS was found within the FieldPopupNewsletter module, developed by FieldThemes, for the popular ecommerce platform Prestashop.

The module contains a file called ajax.php with the following code:

$ppp = new FieldPopupNewsletter(); echo $ppp->newsletterRegistration($_POST['email']);

The newsletterRegistration function, called by the ajax.php file, contains code that lacks proper input validation:

public function newsletterRegistration($email) { if (empty($email) || !Validate::isEmail($email)) { echo $_GET['callback'] . '(' . json_encode(array('<p class="alert alert-danger">' . $this->l('Invalid email address.') . '</p>')) . ')'; return; }

The callback GET parameter is printed to the page without sanitization which makes it susceptible to XSS. One might think the fact a POST parameter is used might mitigate this vulnerability but closer reading reveals this works when $_POST['email'] isn’t set.

Software afectado

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Plataforma	Paquete	Versiones vulnerables	Corregida en
Módulo de PrestaShop	fieldpopupnewsletter	< 1.0.1 < 1.0.1 ?	sin corrección

Referencias

https://security.friendsofpresta.org/modules/2023/09/07/fieldpopupnewsletter.html

Puntuación CVSS 6.1/10

Vector CVSS: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Debilidad (CWE): CWE-79
Plataforma: PrestaShop
Paquete: fieldpopupnewsletter
Publicada: 07.09.2023
Actualizado: 11.10.2026 10:22

Fuentes y licencias

Friends-Of-Presta - CVE-2023-39676 - MIT

MIT

The MIT License (MIT)

Copyright (c) 2016-present Parker Moore and the minima contributors

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.

Historial de vulnerabilidades: fieldpopupnewsletter

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