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    CVE-2026-45755

    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.

    Published:Jul 14, 2026
    Last Modified:Jul 27, 2026
    EPS:Jul 14, 2026
    EPSS Score:0.00238
    CVSS Score:6.9

    Affected Products

    Vendor
    Symfony
    Product
    Mailtrap-mailer
    Vendor
    Symfony
    Product
    Symfony

    Exploits

    No exploit reference

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High