Nodemailer before 9.1.0 Denial of Service via addressparser (nodemailer nodemailer)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.82 % · percentile 57 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- VulnCheck
- NVD status
- Awaiting Analysis
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.
Weaknesses (CWE)
- CWE-400 — Uncontrolled Resource Consumption
References
- https://github.com/nodemailer/nodemailer/security/advisories/GHSA-2x7j-588g-ccc2
- https://github.com/nodemailer/nodemailer/commit/9116da9
- https://github.com/nodemailer/nodemailer/commit/7cc38af
- https://github.com/nodemailer/nodemailer/commit/34da642
- https://github.com/nodemailer/nodemailer/commit/83b8c48
- https://www.vulncheck.com/advisories/nodemailer-before-9.1.0-denial-of-service-via-addressparser
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 4.0 | HIGH 8.7 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N | VulnCheck |
| CVSS 3.1 | HIGH 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | VulnCheck |
| CVSS 4.0 | HIGH 8.7 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X | NVD · disclosure@vulncheck.com (Secondary) |
| CVSS 3.1 | HIGH 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | NVD · disclosure@vulncheck.com (Secondary) |
Advisories
- GHSA-2x7j-588g-ccc2 — Nodemailer: Quadratic (O(n²)) time complexity in addressparser allows remote denial of service via a crafted address list
European references
- ENISA EUVD · EUVD-2026-81296
- GCVE · GCVE-0-2026-92596
Affected products
| Product | Versions |
|---|---|
| nodemailer · nodemailer | affected 0 < 9.1.0 ; unaffected 9.1.0 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |