Is swiftmailer/swiftmailer 5.4 vulnerable?

Composer · 13 releases from 5.4.0 to 5.4.12 · latest swiftmailer/swiftmailer is 6.3.0 · checked 2 Nov 2026

Yes: 1 known advisory

Yes. swiftmailer/swiftmailer 5.4.12, the last 5.4 release, is affected by 1 known security advisory (1 medium), including CVE-2024-28859. 1 more affects earlier 5.4.x releases. Upgrade to 6.2.5 or later to fix all of them.

Upgrade with:composer require swiftmailer/swiftmailer:^6.2.5

Is your project affected?

Private repo? Upload its lockfile instead, or connect GitHub to check every repo.

Advisories affecting swiftmailer/swiftmailer 5.4.12

  • MediumCVE-2024-28859GHSA-wjv8-pxr6-5f4r18 Mar 2024

    Gadget chain in Symfony 1 due to vulnerable Swift Mailer dependency

    Affected
    >=4.0.0 <6.2.5
    Fixed in
    6.2.5

Fixed within 5.4.x, affecting earlier releases

  • CriticalCVE-2016-10074GHSA-pr44-4jfr-286m17 May 2022

    Swift Mailer mail transport Command Injection

    Affected
    <5.4.5
    Fixed in
    5.4.5

Which of your client projects are still on swiftmailer/swiftmailer 5.4?

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Other swiftmailer/swiftmailer versions

Advisory data from OSV.dev (opens OSV.dev in a new tab), which includes the GitHub Advisory Database. Release list from the Composer registry. Refreshed daily.