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phpmailer project phpmailer vulnerabilities and exploits
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5.5
CVSSv3
CVE-2017-5223
An issue exists in PHPMailer prior to 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 directo...
Phpmailer Project Phpmailer
1 EDB exploit
25 Github repositories
6.1
CVSSv3
CVE-2017-11503
PHPMailer 5.2.23 has XSS in the "From Email Address" and "To Email Address" fields of code_generator.php.
Phpmailer Project Phpmailer 5.2.23
9.8
CVSSv3
CVE-2020-36326
PHPMailer 6.1.8 up to and including 6.4.0 allows object injection through Phar Deserialization via addAttachment with a UNC pathname. NOTE: this is similar to CVE-2018-19296, but arose because 6.1.8 fixed a functionality problem in which UNC pathnames were always considered unrea...
Phpmailer Project Phpmailer
Wordpress Wordpress
1 Github repository
9.8
CVSSv3
CVE-2016-10033
The mailSend function in the isMail transport in PHPMailer prior to 5.2.18 might allow remote malicious users to pass extra parameters to the mail command and consequently execute arbitrary code via a \" (backslash double quote) in a crafted Sender property.
Phpmailer Project Phpmailer
Wordpress Wordpress
Joomla Joomla!
9 EDB exploits
51 Github repositories
9.8
CVSSv3
CVE-2016-10045
The isMail transport in PHPMailer prior to 5.2.20 might allow remote malicious users to pass extra parameters to the mail command and consequently execute arbitrary code by leveraging improper interaction between the escapeshellarg function and internal escaping performed in the ...
Phpmailer Project Phpmailer
Wordpress Wordpress
Joomla Joomla!
3 EDB exploits
27 Github repositories
8.1
CVSSv3
CVE-2021-3603
PHPMailer 6.4.1 and previous versions contain a vulnerability that can result in untrusted code being called (if such code is injected into the host project's scope by other means). If the $patternselect parameter to validateAddress() is set to 'php' (the default, ...
Phpmailer Project Phpmailer
Fedoraproject Fedora 33
Fedoraproject Fedora 34
8.1
CVSSv3
CVE-2021-34551
PHPMailer prior to 6.5.0 on Windows allows remote code execution if lang_path is untrusted data and has a UNC pathname.
Phpmailer Project Phpmailer
Fedoraproject Fedora 33
Fedoraproject Fedora 34
5
CVSSv2
CVE-2015-8476
Multiple CRLF injection vulnerabilities in PHPMailer prior to 5.2.14 allow malicious users to inject arbitrary SMTP commands via CRLF sequences in an (1) email address to the validateAddress function in class.phpmailer.php or (2) SMTP command to the sendCommand function in class....
Debian Debian Linux 6.0
Debian Debian Linux 7.0
Debian Debian Linux 8.0
Phpmailer Project Phpmailer
8.8
CVSSv3
CVE-2018-19296
PHPMailer prior to 5.2.27 and 6.x prior to 6.0.6 is vulnerable to an object injection attack.
Phpmailer Project Phpmailer
Debian Debian Linux 8.0
Debian Debian Linux 9.0
Fedoraproject Fedora 33
Fedoraproject Fedora 34
Wordpress Wordpress
1 Github repository
7.5
CVSSv3
CVE-2020-13625
PHPMailer prior to 6.1.6 contains an output escaping bug when the name of a file attachment contains a double quote character. This can result in the file type being misinterpreted by the receiver or any mail relay processing the message.
Phpmailer Project Phpmailer
Fedoraproject Fedora 31
Fedoraproject Fedora 32
Canonical Ubuntu Linux 18.04
Debian Debian Linux 8.0
Debian Debian Linux 9.0
Preferred Score:
CVSSv3
CVSSv2
CVSSv3
CVSSv4
EPSS
VMScore
Recommendations:
CVE-2025-46656
unknown
CVE-2025-46577
CVE-2025-32979
paicoding
XPath injection
hackmd
CVE-2025-3643
opplus
CSRF
local users
CVE-2025-32433
CVE-2025-32432
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