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GHSA-58mj-pw57-4vm2medium6.1

Cross-site scripting in PHPMailer

Impact

PHPMailer versions prior to 5.2.24 (released July 26th 2017) have an XSS vulnerability in one of the code examples, CVE-2017-11503. The code_generator.phps example did not filter user input prior to output. This file is distributed with a .phps extension, so it it not normally executable unless it is explicitly renamed, and the file is not included when PHPMailer is loaded through composer, so it is safe by default. There was also an undisclosed potential XSS vulnerability in the default exception handler (unused by default). Patches for both issues kindly provided by Patrick Monnerat of…

Source excerpt · OSV

Affected packages

Start with the recorded fix for your release branch. Check your installed version and test compatibility before upgrading. Fixing this advisory does not rule out other vulnerabilities in the release.

phpmailer/phpmailer Packagist
Affected rangeRecorded fix
From 5.0.0 before 5.2.24Ecosystem versions5.2.24

Version evidence: OSV · GHSA-58mj-pw57-4vm2

View original version evidence (21 explicit versions)

Original source description

PHPMailer versions prior to 5.2.24 (released July 26th 2017) have an XSS vulnerability in one of the code examples, CVE-2017-11503. The code_generator.phps example did not filter user input prior to output. This file is distributed with a .phps extension, so it it not normally executable unless it is explicitly renamed, and the file is not included when PHPMailer is loaded through composer, so it is safe by default. There was also an undisclosed potential XSS vulnerability in the default exception handler (unused by default). Patches for both issues kindly provided by Patrick Monnerat of the Fedora Project.

Impact

PHPMailer 5.2.23 has XSS in the "From Email Address" and "To Email Address" fields of code_generator.php.

Patches

Fixed in 5.2.24

Workarounds

None.

References

https://nvd.nist.gov/vuln/detail/CVE-2017-11503

For more information

If you have any questions or comments about this advisory:

References