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CVE-2020-15178

Potential XSS in PrestaShop contactform

CRITICAL
9.3
CVSS Score
Published: September 15, 2020 at 05:50 PM UTC
Updated: June 17, 2026 at 02:56 AM UTC
1 product affected across 1 vendorContactform

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Severity
CRITICAL9.3
Exploit prediction
EPSS 1%

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Contactform· Prestashopcomposer
95%
v < 4.3.0
Affected range stops below 4.3.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (3)

x_refsource_MISCPatchThird Party Advisory
Source: [email protected]
https://github.com/PrestaShop/contactform/commit/ecd9f5d14920ec00885766a7cb41bcc5ed8bfa09
x_refsource_CONFIRMThird Party Advisory
Source: [email protected]
https://github.com/PrestaShop/contactform/security/advisories/GHSA-95hx-62rh-gg96
x_refsource_MISCVendor Advisory
Source: [email protected]
https://packagist.org/packages/prestashop/contactform

CVSS

9.3CRITICAL[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-79

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