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.
History

Wed, 02 Sep 2026 21:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 01 Sep 2026 12:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

threat_severity

Moderate


Mon, 31 Aug 2026 09:00:00 +0000

Type Values Removed Values Added
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.
Title Nodemailer CRLF Injection via List-* Header Comments
First Time appeared Nodemailer
Nodemailer nodemailer
Weaknesses CWE-93
CPEs cpe:2.3:a:nodemailer:nodemailer:*:*:*:*:*:*:*:*
Vendors & Products Nodemailer
Nodemailer nodemailer
References
Metrics cvssV3_1

{'score': 5.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N'}

cvssV4_0

{'score': 5.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published: 2026-08-31T08:46:26.291Z

Updated: 2026-09-02T17:58:31.404Z

Reserved: 2026-08-30T13:38:29.951Z

Link: CVE-2026-82661

cve-icon Vulnrichment

Updated: 2026-09-02T17:58:07.615Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-08-31T09:17:03.940

Modified: 2026-09-10T15:48:28.757

Link: CVE-2026-82661

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-08-31T08:46:26Z

Links: CVE-2026-82661 - Bugzilla