Potential XSS injection In PrestaShop contactform

CRITICAL 9.3CVE-2020-15178 · GHSA-95hx-62rh-gg96 · Published 15/09/2020 · updated 17/06/2026

In short

CVE-2020-15178 is a CRITICAL (CVSS 9.3) vulnerability affecting prestashop/contactform, contactform (prestashop).
Chance of exploitation in the next 30 days (EPSS): 1.2%, higher than 68.8% of all vulnerabilities.
Fix: update to 4.3.0 or later.

Package	Affected versions	Patched versions
prestashop/contactform Packagist	`≥ 1.0.1, < 4.3.0`	`4.3.0`
contactform prestashop	`< 4.3.0`	`4.3.0`

Description

Impact

An attacker is able to inject javascript while using the contact form.

Patches

The problem is fixed in v4.3.0

References

Cross-site Scripting (XSS) - Stored (CWE-79)

NVD description

In PrestaShop contactform module (prestashop/contactform) before version 4.3.0, an attacker is able to inject JavaScript while using the contact form. The `message` field was incorrectly unescaped, possibly allowing attackers to execute arbitrary JavaScript in a victim's browser.

References

PrestaShop/contactform security advisory · WEB
nvd.nist.gov/vuln/detail/CVE-2020-15178 · ADVISORY
PrestaShop/contactform commit a1da814 · WEB
PrestaShop/contactform commit ecd9f5d · WEB
PrestaShop/contactform · PACKAGE
packagist.org/packages/prestashop/contactform · WEB

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