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VULNERABILITIES

CVE-2026-90776 Details

Description

Nodemailer versions 9.1.0 through 10.0.4 contain a quadratic time complexity vulnerability in the addressparser component when parsing email addresses with RFC 5322 comments. Attackers can craft malicious email headers with comment-separated atoms to consume excessive CPU and block the Node.js event loop for several seconds, causing denial of service.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:7.5 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://github.com/nodemailer/nodemailer/security/advisories/GHSA-prgh-xp8r-p3m5 CISA-ADP
https://github.com/nodemailer/nodemailer [email protected]
https://github.com/nodemailer/nodemailer/blob/v10.0.4/src/addressparser/index.ts#L251 [email protected]
https://github.com/nodemailer/nodemailer/commit/c07f17518d25aca8ab2ad66968dcbca538c24b89 [email protected]
https://github.com/nodemailer/nodemailer/releases/tag/v10.0.5 [email protected]

see all 7 references

Weakness Enumeration

CWE-IDCWE NameSource
CWE-407Inefficient Algorithmic Complexity[email protected]

Affected Products

No affected product data is available for this CVE.

Change History

2 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-90776
NVD Published Date:
Sep 13, 2026
NVD Last Modified:
Sep 24, 2026
Source:
[email protected]
CVE-2026-90776 Details - Not Deferred