GHSA-xx3c-qf5g-hc39
Symfony has an Argument Injection in SendmailTransport via Dash-Prefixed Recipient Address
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### Description
Symfony Mailer selects a transport via the `MAILER_DSN` environment variable / configuration (e.g. `smtp://...`, `sendmail://...`, `native://default`). `SendmailTransport` invokes the local `sendmail` binary and supports two modes: `-bs` (speak SMTP over stdin: the default) and `-t` (read the message on stdin, pass recipients as command-line arguments).
In `-t` mode, recipient addresses are appended to the sendmail command line **without a `--` end-of-options separator**. A recipient address beginning with `-` (which `Symfony\Component\Mime\Address` accepts as valid) is therefore interpreted by sendmail as a command-line option rather than an address.
### Resolution
The `SendmailTransport` transport now ensure `--` is set before the list of recipients.
The patch for this issue is available [here](https://github.com/symfony/symfony/commit/c45144862dc289d03952f41f6078174089a3afc6) for branch 5.4.
### Credits
Symfony would like to thank Claude Mythos Preview (via Project Glasswing) for reporting the issue and providing the fix.
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6.0.0 수정 버전: 6.4.40 composer require symfony/symfony:^6.4.40 7.0.0 수정 버전: 7.4.12 composer require symfony/symfony:^7.4.12 8.0.0 수정 버전: 8.0.12 composer require symfony/symfony:^8.0.12 참고
- https://github.com/symfony/symfony/security/advisories/GHSA-xx3c-qf5g-hc39 [WEB]
- https://github.com/symfony/symfony/commit/c45144862dc289d03952f41f6078174089a3afc6 [WEB]
- https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/mailer/CVE-2026-45068.yaml [WEB]
- https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2026-45068.yaml [WEB]
- https://github.com/symfony/symfony [PACKAGE]
- https://symfony.com/cve-2026-45068 [WEB]