CVE-2005-1807

The Data function in class.smtp.php in PHPMailer 1.7.2 and earlier allows remote attackers to...

5.0 MediumPublic exploitFix available

The Data function in class.smtp.php in PHPMailer 1.7.2 and earlier allows remote attackers to cause a denial of service (infinite loop leading to memory and CPU consumption) via a long header field.

Exploit likelihood

4.50%Down 6.5 points since Feb 4, 2022

What each source reports

NVD Score used5.0

The Data function in class.smtp.php in PHPMailer 1.7.2 and earlier allows remote attackers to cause a denial of service (infinite loop leading to memory and CPU consumption) via a long header field.

Record: CVE-2005-1807
CVSS 2.0: 5.0 MediumAV:N/AC:L/Au:N/C:N/I:N/A:P
Updated: 2026-11-02

CVE ListNo score

The Data function in class.smtp.php in PHPMailer 1.7.2 and earlier allows remote attackers to cause a denial of service (infinite loop leading to memory and CPU consumption) via a long header field.

Record: CVE-2005-1807
Updated: 2026-11-02

EUVDEUVD-2005-1809No score

The Data function in class.smtp.php in PHPMailer 1.7.2 and earlier allows remote attackers to cause a denial of service (infinite loop leading to memory and CPU consumption) via a long header field.

Record: EUVD-2005-1809
Updated: 2026-11-03

GitHub AdvisoriesGHSA-2qwp-42gw-8pfqNo score

The Data function in class.smtp.php in PHPMailer 1.7.2 and earlier allows remote attackers to...

The Data function in class.smtp.php in PHPMailer 1.7.2 and earlier allows remote attackers to cause a denial of service (infinite loop leading to memory and CPU consumption) via a long header field.

Record: GHSA-2qwp-42gw-8pfq
Updated: 2026-11-02

OSVNo score

The Data function in class.smtp.php in PHPMailer 1.7.2 and earlier allows remote attackers to cause a denial of service (infinite loop leading to memory and CPU consumption) via a long header field.

Record: CVE-2005-1807
Updated: 2026-11-02

OSVDEBIAN-CVE-2005-1807No score

The Data function in class.smtp.php in PHPMailer 1.7.2 and earlier allows remote attackers to cause a denial of service (infinite loop leading to memory and CPU consumption) via a long header field.

Record: DEBIAN-CVE-2005-1807
Updated: 2026-11-02

Affected products

phpmailer

Affected packages

Affected packages
Package	Affected	Fixed
`libphp-phpmailer` Debian:12	before 1.73	1.73
`libphp-phpmailer` Debian:13	before 1.73	1.73
`libphp-phpmailer` Debian:14	before 1.73	1.73

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
Source	Link	Date
Exploit-DB	PHPMailer 1.7 - 'Data()' Remote Denial of Service	2005-05-28

History

History
Recorded	Changed	Sources
Nov 10, 2026	facts
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, Exploit-DB, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2005-1807 is a medium vulnerability (CVSS 5.0) in Phpmailer, published May 28, 2005. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 4.50%, the 91st percentile. Fixed in libphp-phpmailer 1.73.

References

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