CVE-2020-15178

Name: CVE-2020-15178
Creator: NVD / NIST
Published: 2020-09-15T18:15:13.877+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.3/10EPSS 1.22%

Last modified Jun 17, 2026

CVE-2020-15178 is a critical-severity vulnerability rated 9.3/10 on the CVSS scale. 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.. EPSS estimates a 1.22% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

9.3/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N

EPSS Probability

1.22%

65.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Prestashop	Contactform	< 4.3.0

References

https://github.com/PrestaShop/contactform/commit/ecd9f5d14920ec00885766a7cb41bcc5ed8bfa09Patch, Third Party Advisory
https://github.com/PrestaShop/contactform/security/advisories/GHSA-95hx-62rh-gg96Third Party Advisory
https://packagist.org/packages/prestashop/contactformVendor Advisory
https://github.com/PrestaShop/contactform/commit/ecd9f5d14920ec00885766a7cb41bcc5ed8bfa09Patch, Third Party Advisory
https://github.com/PrestaShop/contactform/security/advisories/GHSA-95hx-62rh-gg96Third Party Advisory
https://packagist.org/packages/prestashop/contactformVendor Advisory

Timeline

Published: Sep 15, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-15178?

How severe is CVE-2020-15178?

CVE-2020-15178 has a CVSS score of 9.3/10 (CRITICAL severity). The EPSS model estimates a 1.22% probability of exploitation in the next 30 days.

How do I fix CVE-2020-15178?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-15178?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST