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Cover image for CVE-2016-10033: PHPMailer Command Injection Vulnerability
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Posted on • Originally published at scyscan.com

CVE-2016-10033: PHPMailer Command Injection Vulnerability

CVE ID

CVE-2016-10033

Vulnerability Name

PHPMailer Command Injection Vulnerability

  • Project: PHP
  • Product: PHPMailer

Date

  • Date Added: 2025-07-07
  • Due Date: 2025-07-28

Description

PHPMailer contains a command injection vulnerability because it fails to sanitize user-supplied input. Specifically, this issue affects the 'mail()' function of 'class.phpmailer.php' script. An attacker can exploit this issue to execute arbitrary code within the context of the application. Failed exploit attempts will result in a denial-of-service condition.

Known To Be Used in Ransomware Campaigns?

Unknown

Action

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Additional Notes

This vulnerability could affect an open-source component, third-party library, protocol, or proprietary implementation that could be used by different products. For more information, please see: https://github.com/PHPMailer/PHPMailer/releases/tag/v5.2.18 ; https://github.com/advisories/GHSA-5f37-gxvh-23v6 ; https://nvd.nist.gov/vuln/detail/CVE-2016-10033

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