CVE-2026-93012

9.8 CRITICALpublic exploit available

Published 2026-09-21 · Updated 2026-09-22

AI risk analysis

Summary: This vulnerability allows arbitrary command execution on Windows when the envelope address is controlled by an attacker, leading to potential remote code execution as the sending process.
Exploitability: Exploitation is relatively straightforward if an attacker can control the envelope address, which is a common field in email headers.
Blast radius: If exploited, the impact could be severe, as it allows an attacker to execute arbitrary commands on the server hosting the vulnerable application.
Detection: No reliable host or network indicator is derivable from the published description.
Prioritized remediation: Upgrade to Email::Sender::Transport::Sendmail version 2.602 or later.

rceperlemailsendmailwindows

Analysis generated locally by qwen2.5:7b-instruct (no data left the box). AI-assisted — verify against primary sources before acting.

NVD 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.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weaknesses

CWE-78

Public exploit & PoC references

https://github.com/rjbs/Email-Sender/commit/9a587bc9ff4edae13239190c2651da2c76b1e72c.patch

All references

Source data: NVD (nvd.nist.gov), public domain. Exploit-DB.ai adds local AI analysis for defensive use only.

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