Remote code execution in PHPMailer

緊急 9.8悪用確認済み（CISA KEV）CVE-2016-10033 · GHSA-5f37-gxvh-23v6 · 30/12/2016 公開 · 17/06/2026 更新

PHPMailer Command Injection Vulnerability. 悪用が確認されています：CISA は 07/07/2025 にこの脆弱性を「既知の悪用された脆弱性（KEV）」カタログに追加しました。影響を受けるシステムは緊急に修正してください。

パッケージ	影響を受けるバージョン	修正済みバージョン
phpmailer/phpmailer Packagist	`≥ 5.0.0, < 5.2.18`	`5.2.18`
joomla! joomla	`≥ 1.5.0, ≤ 3.6.5`	修正版なし
phpmailer phpmailer_project	`< 5.2.18`	`5.2.18`
wordpress wordpress	`≤ 4.7`	修正版なし

概要

Impact

The mailSend function in the default isMail transport in PHPMailer before 5.2.18 might allow remote attackers to pass extra parameters to the mail command and consequently execute arbitrary code via a " (backslash double quote) in a crafted Sender property.

Patches

Fixed in 5.2.18

Workarounds

Filter and validate user input before passing it to internal functions.

References

https://nvd.nist.gov/vuln/detail/CVE-2016-10033 Related to a follow-on issue in https://nvd.nist.gov/vuln/detail/CVE-2016-10045

For more information

If you have any questions or comments about this advisory:

Open a private issue in the PHPMailer project

NVD の説明

The mailSend function in the isMail transport in PHPMailer before 5.2.18 might allow remote attackers to pass extra parameters to the mail command and consequently execute arbitrary code via a \" (backslash double quote) in a crafted Sender property.