Arbitrary File Disclosure Affecting phpmailer/phpmailer package, versions <5.2.22


Severity

Recommended
0.0
medium
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Threat Intelligence

Exploit Maturity
Mature
EPSS
91.37% (100th percentile)

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  • Snyk IDSNYK-PHP-PHPMAILERPHPMAILER-70126
  • published6 Jan 2016
  • disclosed6 Jan 2016
  • creditUnknown

Introduced: 6 Jan 2016

CVE-2017-5223  (opens in a new tab)
CWE-200  (opens in a new tab)

How to fix?

Upgrade phpmailer/phpmailer to version 5.2.22 or higher.

Overview

Affected versions of phpmailer/phpmailer are vulnerable to Local File Disclosure.

An issue was discovered in PHPMailer before 5.2.22. PHPMailer's msgHTML method applies transformations to an HTML document to make it usable as an email message body. One of the transformations is to convert relative image URLs into attachments using a script-provided base directory. If no base directory is provided, it resolves to /, meaning that relative image URLs get treated as absolute local file paths and added as attachments. To form a remote vulnerability, the msgHTML method must be called, passed an unfiltered, user-supplied HTML document, and must not set a base directory.

CVSS Scores

version 3.1