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CVE-2007-1718

CRLF injection vulnerability in the mail function in PHP 4.0.0 through 4.4.6 and 5.0.0 through 5.2.1 allows remote attackers to inject arbitrary e-mail headers and possibly conduct spam attacks via a control character immediately following folding of the (1) Subject or (2) To parameter, as demonstrated by a parameter containing a "\r\n\t\n" sequence, related to an increment bug in the…

Severity
High 7.8
Published
28 Mar 2007
Last changed
16 Jun 2026
Added to UpHeron
14 Oct 2026
Exploit chance
6.9% in the next 30 daysHigher than 94% of CVEs. EPSS by FIRST, 12 Nov 2026
Attack
Over the network · No login needed
Attacker can
Change data
CVSS vector
AV:N/AC:L/Au:N/C:N/I:C/A:N
Sources
NVD

Description

CRLF injection vulnerability in the mail function in PHP 4.0.0 through 4.4.6 and 5.0.0 through 5.2.1 allows remote attackers to inject arbitrary e-mail headers and possibly conduct spam attacks via a control character immediately following folding of the (1) Subject or (2) To parameter, as demonstrated by a parameter containing a "\r\n\t\n" sequence, related to an increment bug in the SKIP_LONG_HEADER_SEP macro.

From NVD.

Affected software

SoftwareAffected versions
PHPServers and applications · cpe:a:php:php
  • Version 5.2.1
  • Version 5.2.0
  • Version 5.1.6
  • Version 5.1.5
All 73 release lines
  • Version 4.0-beta1
  • Version 4.0-beta2
  • Version 4.0-beta3
  • Version 4.0-beta4
  • Version 4.0-beta_4_patch1
  • Version 4.0-rc1
  • Version 4.0-rc2
  • Version 4.0
  • Version 4.0.1
  • Version 4.0.1-patch1
  • Version 4.0.1-patch2
  • Version 4.0.2
  • Version 4.0.3
  • Version 4.0.3-patch1
  • Version 4.0.4
  • Version 4.0.4-patch1
  • Version 4.0.5
  • Version 4.0.6
  • Version 4.0.7-rc1
  • Version 4.0.7-rc2
  • Version 4.0.7-rc3
  • Version 4.0.7
  • Version 4.1.0
  • Version 4.1.1
  • Version 4.1.2
  • Version 4.2
  • Version 4.2.1
  • Version 4.2.2
  • Version 4.2.3
  • Version 4.3.0
  • Version 4.3.1
  • Version 4.3.2
  • Version 4.3.3
  • Version 4.3.4
  • Version 4.3.5
  • Version 4.3.6
  • Version 4.3.7
  • Version 4.3.8
  • Version 4.3.9
  • Version 4.3.10
  • Version 4.3.11
  • Version 4.4.0
  • Version 4.4.1
  • Version 4.4.2
  • Version 4.4.3
  • Version 4.4.4
  • Version 4.4.5
  • Version 4.4.6
  • Version 5.0.0-beta1
  • Version 5.0.0-beta2
  • Version 5.0.0-beta3
  • Version 5.0.0-beta4
  • Version 5.0-rc1
  • Version 5.0.0-rc1
  • Version 5.0-rc2
  • Version 5.0.0-rc2
  • Version 5.0-rc3
  • Version 5.0.0-rc3
  • Version 5.0.0
  • Version 5.0.1
  • Version 5.0.2
  • Version 5.0.3
  • Version 5.0.4
  • Version 5.0.5
  • Version 5.1.0
  • Version 5.1.1
  • Version 5.1.2
  • Version 5.1.3
  • Version 5.1.4
  • Version 5.1.5
  • Version 5.1.6
  • Version 5.2.0
  • Version 5.2.1

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2007-1718
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2007-1718