# CVE-2026-82661: node-nodemailer: Nodemailer before 8.0.9 fails to sanitize carriage return and line feed characters in list comment fields, allowing a...

CVE-2026-82661 is fixed in node-nodemailer on 1 platform by DEBIAN-CVE-2026-82661 (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-2026-82661
- Priority: Routine
- CVSS: n/a
- EPSS: 0.0026
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Aug 31, 2026

## Description

Nodemailer before 8.0.9 fails to sanitize carriage return and line feed characters in list comment fields, allowing attackers to inject arbitrary message headers. An attacker with control over list.*.comment parameters can inject CRLF sequences to create additional headers in generated RFC822 messages, altering mail client behavior and message semantics.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | node-nodemailer Debian 14 | 8.0.11+~8.0.1-1 | [DEBIAN-CVE-2026-82661](https://patchblox.com/security/data/fix/linux/debian-cve-2026-82661.md) | Sep 1, 2026 |

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Data as of 2026-11-10T01:44:33Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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