Description
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
Published: 2025-09-29
Score: 8.2 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

Sign in to view the affected projects.

Advisories
Source ID Title
EUVD EUVD EUVD-2025-31582 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
Github GHSA Github GHSA GHSA-wpwj-69cm-q9c5 go-mail has insufficient address encoding when passing mail addresses to the SMTP client
History

Thu, 16 Oct 2025 16:00:00 +0000

Type Values Removed Values Added
First Time appeared Pebcak
Pebcak go-mail
CPEs cpe:2.3:a:pebcak:go-mail:*:*:*:*:*:go:*:*
Vendors & Products Pebcak
Pebcak go-mail
Metrics cvssV3_1

{'score': 9.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N'}

Tue, 30 Sep 2025 15:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Tue, 30 Sep 2025 09:00:00 +0000

Type Values Removed Values Added
First Time appeared Go-mail
Go-mail go-mail
Vendors & Products Go-mail
Go-mail go-mail

Mon, 29 Sep 2025 22:30:00 +0000

Type Values Removed Values Added
Description 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
Title go-mail has insufficient address encoding when passing mail addresses to the SMTP client
Weaknesses CWE-88
References
Metrics cvssV4_0

{'score': 8.2, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N'}

Subscriptions

Go-mail Go-mail
Pebcak Go-mail
cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2025-09-30T14:44:35.194Z

Reserved: 2025-09-23T14:33:49.505Z

Link: CVE-2025-59937

cve-icon Vulnrichment

Updated: 2025-09-30T14:44:28.447Z

cve-icon NVD

Status : Analyzed

Published: 2025-09-29T23:15:31.807

Modified: 2025-10-16T15:55:27.077

Link: CVE-2025-59937

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2025-09-30T08:47:34Z

Weaknesses