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CVE-2025-59937GO-2025-3988GHSA-WPWJ-69CM-Q9C5

go-mail has insufficient address encoding when passing mail addresses to the SMTP client

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 0.7.1
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: poc
  • Automatable: no
  • Technical impact: partial

Summary

go-mail is a comprehensive library for sending mails with Go. In versions 0.7.0 and below, due to incorrect handling of the mail.Address values when a sender- or recipient address is passed to the corresponding MAIL FROM or RCPT TO commands of the SMTP client, there is a possibility of wrong address routing or even ESMTP parameter smuggling. For successful exploitation, it is required that the user's code allows for arbitrary mail address input (i. e. through a web form or similar). If only static mail addresses are used (i. e. in a config file) and the mail addresses in use do not consist of quoted local parts, this should not affect users. This issue is fixed in version 0.7.1

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: poc · Automatable: no · Technical impact: partial

  3. Record last updated

Affected versions

  • wneessen go-mail

    fixed in 0.7.1

  • github.com/wneessen/go-mailGo

    fixed in 0.7.1

References 4

GitHub · wneessen/go-mail