CVE-2026-92596

Nodemailer before 9.1.0 Denial of Service via addressparser

Published: Sep 16, 2026Updated: Sep 22, 2026 Sources: CVE List NVDCWE-400

7.5HIGH

Description

Nodemailer before 9.1.0 contains a quadratic time complexity vulnerability in the addressparser component that allows remote attackers to cause denial of service by supplying a crafted comma-separated address list. Attackers can send a single email with a large number of addresses to block the Node.js event loop for extended periods, consuming 100% CPU and freezing the process.

No summary for this CVE yet.

CVSS Vector Breakdown

Exploitability

AV:NAttack Vector

Network

AC:LAttack Complexity

Low

PR:NPrivileges Required

None

UI:NUser Interaction

None

Scope

S:UScope

Unchanged

Impact

C:NConfidentiality

None

I:NIntegrity

None

A:HAvailability

High

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Weaknesses

CWE-400

Affected Products

nodemailer

oss-project

nodemailerLibrary

OSS Libraries / generic-library

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique

Impact

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References

https://github.com/nodemailer/nodemailer/security/advisories/GHSA-2x7j-588g-ccc2

github.com

https://github.com/nodemailer/nodemailer/commit/9116da9

github.com

https://github.com/nodemailer/nodemailer/commit/7cc38af

github.com

and 3 more references View all →

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