Description
Email::Sender::Transport::Sendmail versions before 2.602 for Perl allow arbitrary command execution on Windows sending a message whose envelope address reaches the shell in _sendmail_pipe.

On MSWin32 the envelope sender and every recipient go into a single command string, which open() passes to a shell. Every other platform gets the list form, which runs sendmail directly. When the caller supplies no envelope, Email::Sender::Simple takes the recipients from the To and Cc headers and the sender from the From header.

An attacker who controls one of those header addresses runs commands as the sending process.
Published: 2026-09-21
Score: n/a
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

Vendor Solution

Upgrade to Email-Sender 2.602 or later.


Vendor Workaround

For Windows deployments that cannot upgrade to Email-Sender 2.602, use a transport that does not build a command line, such as Email::Sender::Transport::SMTP.

Tracking

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Advisories

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History

Mon, 21 Sep 2026 19:45:00 +0000

Type Values Removed Values Added
First Time appeared Rjbs
Rjbs email::sender::transport:sendmail
Vendors & Products Rjbs
Rjbs email::sender::transport:sendmail

Mon, 21 Sep 2026 17:30:00 +0000

Type Values Removed Values Added
Description Email::Sender::Transport::Sendmail versions before 2.602 for Perl allow arbitrary command execution on Windows sending a message whose envelope address reaches the shell in _sendmail_pipe. On MSWin32 the envelope sender and every recipient go into a single command string, which open() passes to a shell. Every other platform gets the list form, which runs sendmail directly. When the caller supplies no envelope, Email::Sender::Simple takes the recipients from the To and Cc headers and the sender from the From header. An attacker who controls one of those header addresses runs commands as the sending process.
Title Email::Sender::Transport::Sendmail versions before 2.602 for Perl allow arbitrary command execution on Windows sending a message whose envelope address reaches the shell in _sendmail_pipe
Weaknesses CWE-78
References

Subscriptions

Rjbs Email::sender::transport:sendmail
cve-icon MITRE

Status: PUBLISHED

Assigner: CPANSec

Published:

Updated: 2026-09-21T17:19:27.569Z

Reserved: 2026-09-17T14:38:04.344Z

Link: CVE-2026-93012

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-09-21T18:17:16.137

Modified: 2026-09-21T18:17:16.137

Link: CVE-2026-93012

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-21T19:23:09Z

Weaknesses