CVE-2017-11503: Cross-site scripting in PHPMailer

medium Affects phpmailer/phpmailer. Feed 2026.10.29.4, updated 2026-10-29; published 2020-03-05; advisory modified 2024-02-16.

Cross-site scripting in PHPMailer

Package: phpmailer/phpmailer Composer
Affected versions: >=5.0.0 and <5.2.24
Fixed in: 5.2.24
Severity: medium CVSS 6.1
Exploitation: not on CISA KEV · EPSS 2% (84.0th percentile)
Published: 2020-03-05
Source: osv.dev

References

CWE-79

NVD record phpmailer/phpmailer advisories

Am I affected?

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Related advisories

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CVE-2008-5619 high PHPMailer susceptible to arbitrary code execution same package: phpmailer/phpmailer
CVE-2020-13625 high Insufficient output escaping of attachment names in PHPMailer same package: phpmailer/phpmailer
CVE-2020-36326 critical Object injection in PHPMailer/PHPMailer same package: phpmailer/phpmailer
CVE-2021-34551 high Remote Code Execution vulnerability in PHPMailer 6.4.1 running on Windows same package: phpmailer/phpmailer