CVE-2026-93012

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.

Overview

State: PUBLISHED
Assigner (CNA): CPANSec
CVSS severity: —
CVSS score: —
CVSS vector: —
Effective score: no score available from CNA, NVD, or AI yet
CWE(s): CWE-78
Reserved: 2026-09-17
Published: 2026-09-21 17:19 UTC
Last updated: 2026-09-22 19:26 UTC
Source: https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/93xxx/CVE-2026-93012.json

NVD triage scoring NVD CVE 2.0

Layer NVD adds on top of the CNA's CVE record — published / last-modified timestamps, exploitability / impact subscores, and the FIRST.org EPSS probability that this CVE will be exploited in the wild in the next 30 days.

NVD published: 2026-09-21 18:17:16 UTC
NVD last modified: 2026-09-21 21:17:17 UTC

AI-forensic CVSS estimate

Used only when a CVE has no official CVSS from its CNA or NVD. An LLM estimates the v3.1 base score from the description; a HIGH/CRITICAL estimate promotes the CVE to a Threat.

No AI estimate yet — it runs automatically once NVD has been checked, or click the button above.

European Union Vulnerability Database ENISA EUVD

ENISA's official EU repository for curated vulnerability intelligence. Carries a separate identifier (EUVD-YYYY-NNNN) and frequently exposes an earlier-published description + CVSS than NVD does.

EUVD ID: EUVD-2026-84006
Assigner: CPANSec
Published: Sep 21, 2026, 5:19:27 PM
Updated: Sep 22, 2026, 3:06:38 AM
EUVD base score: 0.0 / 10
EUVD-reported EPSS: 0.0000
Aliases: GHSA-j6jw-3jf9-6hc7

ENISA 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.

EUVD references (2)

Affected products (1)

Vendor	Product	Versions	Platforms
—	—	`0` (affected)	—

Vendor references (2)

References embedded in the original CVE record by the assigning CNA.

Web references (0)

DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.

No web references attached yet.

NVD-tagged references (3)

Reference list NVD curates from the CNA record, vendor advisories, and third-party reports. The tag chips below are NVD's analyst-assigned categories.

http://www.openwall.com/lists/oss-security/2026/09/21/8 af854a3a-2127-422b-91ae-364da2661108
https://github.com/rjbs/Email-Sender/commit/9a587bc9ff4edae13239190c2651da2c76b1e72c.patch 9b29abf9-4ab0-4765-b253-1875cd9b441e
https://metacpan.org/release/RJBS/Email-Sender-2.602/changes 9b29abf9-4ab0-4765-b253-1875cd9b441e

Remediations (10)

Security Update Guide - Microsoft

web:msrc.microsoft.com

The Microsoft Security Response Center (MSRC) investigates all reports of security vulnerabilities affecting Microsoft products and services, and provides the information here as part of the ongoing effort to help you manage security risks and help keep your systems protected.

2026-09-22 17:08 UTC
Security Update Guide - Microsoft Security Response Center

web:msrc.microsoft.com

Access Microsoft Security Response Center's guide to address vulnerabilities, manage security risks, and keep your systems protected with the latest updates.

2026-09-22 17:08 UTC
Cisco Advance Notification for Publication of September 16, 2026 ...

web:sec.cloudapps.cisco.com

On September 16, 2026 , the Cisco Product Security Incident Response Team (PSIRT) published the advisories that are listed in the following tables. To remediate these vulnerabilities, Cisco strongly recommends that customers upgrade to the fixed software that is indicated in the advisories. For more information about changes in Cisco PSIRT vulnerability disclosure, see Strengthening the ...

2026-09-22 17:08 UTC
Microsoft Patch Tracker (September 2026): Exploit-Ranked | Senserva

web:senserva.com

Every Microsoft security patch (KB) and the CVEs it fixes, with severity, CVSS, and CISA KEV status. Cross-linked to the CVE reference.

2026-09-22 17:08 UTC
Portal for ArcGIS Security 2026 Update 2 Patch - Esri Support

web:support.esri.com

This patch deals specifically with the issues listed below under Issues Addressed with this Patch . As part of the patch installation, the Portal for ArcGIS service is stopped and restarted. The restart may take several minutes depending on the number of items on the enterprise deployment. As a best practice, clear the browser cache and re-launch the browser after installing the patch . This ...

2026-09-22 17:08 UTC
Description of the security update for Microsoft Exchange Server ...

web:support.microsoft.com

This security update resolves vulnerabilities in Microsoft Exchange Server. To learn more about these vulnerabilities, see the following Common Vulnerabilities and Exposures ( CVE ): CVE - 2026 -62910 - Microsoft Common Vulnerabilities and Exposures CVE - 2026 -62911 - Microsoft Common Vulnerabilities and Exposures CVE - 2026 -62912 - Microsoft Common Vulnerabilities and Exposures CVE - 2026 -62913 ...

2026-09-22 17:08 UTC
CVE-2026-73012 Microsoft Windows heap-based overflow

web:vuldb.com

A vulnerability was found in Microsoft Windows. This vulnerability was named CVE - 2026 -73012. Applying a patch is advised to resolve this issue.

2026-09-22 17:08 UTC
CVE-2026-73012 - vulnerability database | Vulners.com

web:vulners.com

Built on top of Vulners' database and SDK, end-user solutions give security professionals and developers lightweight and powerful tools for vulnerability remediation

2026-09-22 17:08 UTC
National Vulnerability Database | NIST

web:www.nist.gov

NIST maintains the National Vulnerability Database (NVD), a repository of information on software and hardware flaws that can compromise computer security. This is a key piece of the nation's cybersecurity infrastructure.

2026-09-22 17:08 UTC
Oracle Critical Patch Update Advisory - July 2026

web:www.oracle.com

This Critical Patch Update contains 1448 new security patches across the product families listed below. Please note that a My Oracle Support (MOS) note summarizing the content of this Critical Patch Update and other Oracle Software Security Assurance activities is located at July 2026 Critical Patch Update: Executive Summary and Analysis.

2026-09-22 17:08 UTC

AI Forensic Analysis

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Raw JSON

The full cvelistV5 record. Download as CVE-2026-93012.json.

{
  "containers": {
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      {
        "providerMetadata": {
          "dateUpdated": "2026-09-21T20:07:25.460Z",
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        "references": [
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            "url": "http://www.openwall.com/lists/oss-security/2026/09/21/8"
          }
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        "title": "CVE Program Container"
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      {
        "metrics": [
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              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "HIGH",
              "baseScore": 9.8,
              "baseSeverity": "CRITICAL",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
              "version": "3.1"
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          },
          {
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              "content": {
                "id": "CVE-2026-93012",
                "options": [
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                  {
                    "Automatable": "yes"
                  },
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                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-09-22T19:26:09.814526Z",
                "version": "2.0.3"
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    ],
    "cna": {
      "affected": [
        {
          "collectionURL": "https://cpan.org/modules",
          "defaultStatus": "unaffected",
          "modules": [
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          ],
          "packageName": "Email-Sender",
          "packageURL": "pkg:cpan/Email-Sender",
          "programFiles": [
            "lib/Email/Sender/Transport/Sendmail.pm"
          ],
          "programRoutines": [
            {
              "name": "Email::Sender::Transport::Sendmail::_sendmail_pipe"
            }
          ],
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          "versions": [
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          "value": "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.\n\nOn 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.\n\nAn attacker who controls one of those header addresses runs commands as the sending process."
        }
      ],
      "problemTypes": [
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          "descriptions": [
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              "cweId": "CWE-78",
              "description": "CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')",
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          "tags": [
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          "url": "https://github.com/rjbs/Email-Sender/commit/9a587bc9ff4edae13239190c2651da2c76b1e72c.patch"
        },
        {
          "tags": [
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          ],
          "url": "https://metacpan.org/release/RJBS/Email-Sender-2.602/changes"
        }
      ],
      "solutions": [
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          "lang": "en",
          "value": "Upgrade to Email-Sender 2.602 or later."
        }
      ],
      "source": {
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      },
      "timeline": [
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          "lang": "en",
          "time": "2026-09-21T00:00:00.000Z",
          "value": "Version 2.602 released with fix."
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      ],
      "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",
      "workarounds": [
        {
          "lang": "en",
          "value": "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."
        }
      ],
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  "cveMetadata": {
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    "dateReserved": "2026-09-17T14:38:04.344Z",
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    "state": "PUBLISHED"
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