# CVE-2026-82853: node-nodemailer: Nodemailer versions before 8.0.5 contain an SMTP command injection vulnerability in the transport name option used in...

CVE-2026-82853 is fixed in node-nodemailer on 1 platform by DEBIAN-CVE-2026-82853 (version 8.0.11+~8.0.1-1), released September 1, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2026-82853
- Priority: Routine
- CVSS: n/a
- EPSS: 0.0103
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Aug 31, 2026

## Description

Nodemailer versions before 8.0.5 contain an SMTP command injection vulnerability in the transport name option used in EHLO/HELO commands. The name parameter is concatenated directly into SMTP commands without sanitizing carriage return and line feed characters, allowing attackers to inject arbitrary SMTP commands for email spoofing and phishing attacks.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | node-nodemailer Debian 14 | 8.0.11+~8.0.1-1 | [DEBIAN-CVE-2026-82853](https://patchblox.com/security/data/fix/linux/debian-cve-2026-82853.md) | Sep 1, 2026 |

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Data as of 2026-11-09T07:25:28Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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