What’s Vulnerable › Vulnerabilities

CVE-2020-15178: Potential XSS in PrestaShop contactform

• Severity: critical (CVSS 9.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-09-15 · updated 2026-06-17
• Weakness: CWE-79

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.

Affected products

• PrestaShop contactform: before 4.3.0 — fixed in 4.3.0

How to fix

Upgrade to a fixed version: PrestaShop contactform 4.3.0. Check the vendor advisory for mitigations.

References

• https://github.com/PrestaShop/contactform/commit/ecd9f5d14920ec00885766a7cb41bcc5ed8bfa09
• https://github.com/PrestaShop/contactform/security/advisories/GHSA-95hx-62rh-gg96
• https://packagist.org/packages/prestashop/contactform
• https://github.com/PrestaShop/contactform/commit/ecd9f5d14920ec00885766a7cb41bcc5ed8bfa09
• https://github.com/PrestaShop/contactform/security/advisories/GHSA-95hx-62rh-gg96
• https://packagist.org/packages/prestashop/contactform

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