CVE-2026-92596

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.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/nodemailer/nodemailer/commit/34da642
https://github.com/nodemailer/nodemailer/commit/7cc38af
https://github.com/nodemailer/nodemailer/commit/83b8c48
https://github.com/nodemailer/nodemailer/commit/9116da9
https://github.com/nodemailer/nodemailer/security/advisories/GHSA-2x7j-588g-ccc2
https://www.vulncheck.com/advisories/nodemailer-before-9.1.0-denial-of-service-via-addressparser
https://github.com/nodemailer/nodemailer/security/advisories/GHSA-2x7j-588g-ccc2

Configurations

No configuration.

History

17 Sep 2026, 14:17

Type	Values Removed	Values Added
References	~~() https://github.com/nodemailer/nodemailer/security/advisories/GHSA-2x7j-588g-ccc2 -~~	() https://github.com/nodemailer/nodemailer/security/advisories/GHSA-2x7j-588g-ccc2 -

16 Sep 2026, 22:18

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-09-16 22:18

Updated : 2026-09-17 14:17

NVD link : CVE-2026-92596

Mitre link : CVE-2026-92596

CVE.ORG link : CVE-2026-92596

JSON object : View

Products Affected

No product.

CWE

CWE-400

Uncontrolled Resource Consumption

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