CVE-2026-45755
Fixed in a distro release EPSS <1%CVSS 6.9
Symfony is a PHP framework for web and console applications and a set of reusable PHP components. Prior to 7.4.12 and 8.0.12, MailtrapRequestParser::doParse() received the configured webhook secret but ignored the X-Mt-Signature HMAC header, allowing unauthenticated POST requests to inject forged Mailtrap delivery, bounce, open, click, or spam events. This issue is fixed in versions 7.4.12 and 8.0.12.
Products: symfony, /mailtrap-mailer mailtrap-mailer
Fixed upstream
| Ecosystem | Package | Fixed in |
|---|---|---|
| Packagist | symfony/mailtrap-mailer | 7.4.12 |
| Packagist | symfony/mailtrap-mailer | 8.0.12 |
| Packagist | symfony/symfony | 7.4.12 |
| Packagist | symfony/symfony | 8.0.12 |
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Debian 14 | symfony | 7.4.12+dfsg-1 |
| Ubuntu 16.04 LTS | symfony | no fix |
| Ubuntu 25.10 | symfony | no fix |
| Ubuntu 26.04 LTS | symfony | no fix |
| Ubuntu 26.10 | symfony | no fix |
| Ubuntu Pro 18.04 LTS | symfony | no fix |
| Ubuntu Pro 20.04 LTS | symfony | no fix |
| Ubuntu Pro 22.04 LTS | symfony | no fix |
| Ubuntu Pro 24.04 LTS | symfony | no fix |