CVE-2018-19296: Phar object injection in PHPMailer

high Affects phpmailer/phpmailer. Feed 2026.10.29.4, updated 2026-10-29; published 2020-03-05; advisory modified 2024-02-21.

Phar object injection in PHPMailer

Package: phpmailer/phpmailer Composer
Affected versions: >=5.0.0 and <5.2.27 or >=6.0.0 and <6.0.6
Fixed in: 5.2.27, 6.0.6
Severity: high CVSS 8.8
Exploitation: not on CISA KEV · EPSS 2% (82.7th percentile)
Published: 2020-03-05
Source: osv.dev

References

CWE-1321 CWE-502 CWE-915

NVD record phpmailer/phpmailer advisories

Am I affected?

Find out in one command. phpwarden checks your composer.lock against this advisory and 20,000+ others, ranked by real-world exploitation (CISA KEV + EPSS). Free, offline, open data.

# PHP projects (recommended)
composer require --dev phpwarden/phpwarden
# then
vendor/bin/phpwarden deps composer.lock

# or, without Composer
pipx install phpwarden   &&   phpwarden deps composer.lock

Or keep it checked automatically: GitHub Action · pre-commit hook · GitLab CI · Laravel artisan command

Install docs How findings are ranked

Related advisories

CVE-2016-10033 KEV critical Remote code execution via crafted Sender in the isMail transport same package: phpmailer/phpmailer
CVE-2016-10045 critical Remote code execution in PHPMailer same package: phpmailer/phpmailer
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