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CVE-2017-5223 Details

Description

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:5.5 MEDIUMVector:CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
http://kalilinux.co/2017/01/12/phpmailer-cve-2017-5223-local-information-disclosure-vulnerability-analysis/	CVE	ExploitThird Party Advisory
https://github.com/PHPMailer/PHPMailer/blob/master/SECURITY.md	CVE	Issue TrackingPatchThird Party Advisory
https://www.exploit-db.com/exploits/43056/	CVE
http://www.securityfocus.com/bid/95328	CVE	Third Party AdvisoryVDB Entry
http://kalilinux.co/2017/01/12/phpmailer-cve-2017-5223-local-information-disclosure-vulnerability-analysis/	[email protected]	ExploitThird Party Advisory
https://github.com/PHPMailer/PHPMailer/blob/master/SECURITY.md	[email protected]	Issue TrackingPatchThird Party Advisory
https://www.exploit-db.com/exploits/43056/	[email protected]
http://www.securityfocus.com/bid/95328	[email protected]	Third Party AdvisoryVDB Entry

see all 8 references

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-200	Exposure of Sensitive Information to an Unauthorized Actor	[email protected]

Affected Products

Product	Versions
phpmailer project phpmailer	<= 5.2.21
CPE cpe:2.3:a:phpmailer_project:phpmailer:::::::: Remediation No remediation found in references.

Change History

7 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	[email protected]
May 13, 2026	CVE Status Change	[email protected]
Nov 21, 2024	CVE Modified	CVE
May 14, 2024	CVE Modified	[email protected]
Oct 28, 2017	CVE Modified	[email protected]
Jan 18, 2017	Initial Analysis	[email protected]
Jan 18, 2017	CVE Modified	[email protected]