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.

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - 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. (CVE-2026-45755)

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - 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. (CVE-2026-45755)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Type	Severity
442437	SCA: security update for symfony/mailtrap-mailer, symfony/symfony (GHSA-59f3-vp2f-mp9w)	Tenable Cloud Security	SCA Checks	Local	medium
442437	SCA: security update for symfony/mailtrap-mailer, symfony/symfony (GHSA-59f3-vp2f-mp9w)	Tenable Self-Hosted Container Security	SCA Checks	Local	medium
316502	Linux Distros Unpatched Vulnerability : CVE-2026-45755	Nessus	Misc.	Local	medium

Detections

Analytics

CVE-2026-45755

medium

Tenable Plugins

medium

medium

medium