# CVE-2016-10074: php-swiftmailer: The mail transport (aka Swift_Transport_MailTransport) in Swift Mailerbefore 5.4.5 might allow remote attackers to pa...

CVE-2016-10074 is fixed in 2 products on 1 platform, first by libphp-swiftmailer 5.4.2-1.1, released December 30, 2016. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2016-10074
- Priority: Routine
- CVSS: n/a (Medium)
- EPSS: 0.4379
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Dec 30, 2016

## Description

The mail transport (aka Swift_Transport_MailTransport) in Swift Mailerbefore 5.4.5 might allow remote attackers to pass extra parameters to themail command and consequently execute arbitrary code via a \" (backslashdouble quote) in a crafted e-mail address in the (1) From, (2) ReturnPath,or (3) Sender header.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | libphp-swiftmailer Ubuntu 18.04.6 LTS (bionic) | 5.4.2-1.1 | [libphp-swiftmailer 5.4.2-1.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libphp-swiftmailer-5.4.2-1.1.md) | Dec 30, 2016 |
| Linux | libphp-swiftmailer Ubuntu 20.04 LTS (focal) | 5.4.2-1.1 | [libphp-swiftmailer 5.4.2-1.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libphp-swiftmailer-5.4.2-1.1.md) | Dec 30, 2016 |
| Linux | php-swiftmailer Ubuntu 18.04.6 LTS (bionic) | 5.4.2-1.1 | [php-swiftmailer 5.4.2-1.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-php-swiftmailer-5.4.2-1.1.md) | Dec 30, 2016 |
| Linux | php-swiftmailer Ubuntu 20.04 LTS (focal) | 5.4.2-1.1 | [php-swiftmailer 5.4.2-1.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-php-swiftmailer-5.4.2-1.1.md) | Dec 30, 2016 |
| Linux | php-swiftmailer Ubuntu 24.10 (oracular) | 5.4.2-1.1 | [php-swiftmailer 5.4.2-1.1](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-php-swiftmailer-5.4.2-1.1.md) | Jan 16, 2026 |

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Data as of 2026-11-07T06:34:28Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo