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    <title>Most recent entries from all</title>
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    <lastBuildDate>Tue, 29 Sep 2026 05:26:54 +0000</lastBuildDate>
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      <title>CVE-2026-82854 — Nodemailer before 8.0.3 SMTP Command Injection via envelope.size</title>
      <link>https://vulnerability.circl.lu/vuln/cve-2026-82854</link>
      <description>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; nodemailer&lt;/p&gt;
&lt;p&gt;Nodemailer before 8.0.4 is vulnerable to SMTP command injection through the unsanitized envelope.size parameter. When an application passes a custom envelope object with a size property containing CRLF characters to sendMail(), the value is concatenated into the SMTP MAIL FROM command (as SIZE=...) without sanitization, allowing injection of arbitrary SMTP commands such as RCPT TO to silently add attacker-controlled recipients. Exploitation requires the application to expose the envelope size to attacker-controlled input, as Nodemailer does not include size in the default auto-constructed envelope.&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; nodemailer&lt;/p&gt;
&lt;p&gt;Nodemailer before 8.0.4 is vulnerable to SMTP command injection through the unsanitized envelope.size parameter. When an application passes a custom envelope object with a size property containing CRLF characters to sendMail(), the value is concatenated into the SMTP MAIL FROM command (as SIZE=...) without sanitization, allowing injection of arbitrary SMTP commands such as RCPT TO to silently add attacker-controlled recipients. Exploitation requires the application to expose the envelope size to attacker-controlled input, as Nodemailer does not include size in the default auto-constructed envelope.&lt;/p&gt;</content:encoded>
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