CVE-2026-124916
Received Received - Intake

Authenticated PHP Code Injection in PrestaShop Back-Office

Publication date: 2026-11-09

Last updated on: 2026-11-09

Assigner: CERT/CC

Description
PrestaShop contains an authenticated PHP code injection vulnerability in the back-office Performance debug-mode configuration. A back-office user with permission to modify debug settings can supply a crafted `debug_cookie_name` or `debug_cookie_value` that is written without sufficient escaping into a PHP configuration file. When PrestaShop subsequently loads the generated file, the injected PHP code is executed with the privileges of the web-server process.

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Meta Information

Published
2026-11-09
Last Modified
2026-11-09
Generated
2026-11-09
AI Q&A
2026-11-09
EPSS Evaluated
N/A
NVD
CVE-2026-124916
EUVD
EUVD-2026-120080

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
PrestaShop PrestaShop From 1.5.0.0 (inc) to 9.2.1 (exc)

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Exploitability

CWE
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CWE ID Description
CWE-UNKNOWN

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Executive Summary

PrestaShop has an authenticated PHP code injection vulnerability in the back-office Performance debug-mode configuration. A user with permission to modify debug settings can inject crafted values into debug_cookie_name or debug_cookie_value. These values are written without proper escaping into a PHP configuration file. When PrestaShop loads this file, the injected PHP code executes with the privileges of the web server process.

Detection Guidance

Check PrestaShop versions 9.0.0 to 9.2.0 for the vulnerability. Inspect back-office Performance debug settings for unusual cookie names or values containing PHP code. Review server logs for unexpected PHP execution or file modifications in debug configuration files.

Impact Analysis

An attacker with Performance permissions could execute arbitrary code on the server, leading to full system compromise. This includes installing malware, stealing data, or disrupting services. Additionally, malformed inputs could break the PHP file, causing the front and back offices to become unavailable.

Compliance Impact

This vulnerability could lead to unauthorized access to sensitive data, violating GDPR and HIPAA requirements for data protection and confidentiality. A breach may result in legal penalties, reputational damage, and loss of customer trust.

Mitigation Strategies

Upgrade PrestaShop to version 9.2.1 or later immediately. Disable debug mode in back-office Performance settings if not required. Restrict Performance permissions to only trusted users. Monitor for unauthorized file changes in debug configuration paths.

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