CVE-2026-110872
Nodemailer 3.0.0 before 10.0.10 Denial of Service via SMTP Reply Parsing
CVSS Score
5.9
EPSS Score
0.0%
EPSS Percentile
0th
Nodemailer from 3.0.0 before 10.0.10 contains a quadratic complexity denial of service vulnerability in the SMTP client reply parser in SMTPConnection._onData and isPartialResponse. A malicious SMTP server or on-path attacker can stream continuation lines without a completion line before authentication, blocking the Node.js event loop and exhausting memory.
| CWE | CWE-400 |
| Vendor | nodemailer |
| Product | nodemailer |
| Published | Oct 14, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected Versions
nodemailer / nodemailer
3.0.0 < 10.0.10
References
Credits
🔍 manus-use