CVE-2026-93012Public exploitHinoki check available

Command execution via shell-interpreted envelope addresses

Published Sep 21, 2026 · Updated Sep 21, 2026

OS command injection in Email::Sender before 2.602 allows attackers to execute commands on Windows via crafted envelope addresses. The Sendmail transport's _sendmail_pipe builds one command string from sender and recipient addresses and passes it through the Windows shell. An application must send mail with an attacker-controlled envelope or To, Cc, or From header; commands run with the sending process's privileges.

CVSS severityUnavailable
Unscored
EPSS probability0.60%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

OS command injection in Email::Sender before 2.602 allows attackers to execute commands on Windows via crafted envelope addresses. The Sendmail transport's _sendmail_pipe builds one command string from sender and recipient addresses and passes it through the Windows shell. An application must send mail with an attacker-controlled envelope or To, Cc, or From header; commands run with the sending process's privileges.

The record

CVE
CVE-2026-93012
Published
Sep 21, 2026
Updated
Sep 21, 2026
Vendor
Ricardo Signes
Product
Email::Sender
Classifications
T1059.003
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Sep 21, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 21, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <2.602

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

Ricardo Signes · Email::Senderversion=0 <2.602

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
VectorUnavailable
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

T1059.003Windows Command Shell

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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