CVE-2026-92596
Nodemailer before 9.1.0 Denial of Service via addressparser
- State
- Published
- Severity
- 8.7 High
- Published
- Sep 16, 2026
- Updated
- Sep 17, 2026
- Reserved
- Sep 16, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 8.7 High | 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 |
| 3.1 | 7.5 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | VulnCheck |
Weaknesses
- CWE-400 Uncontrolled Resource Consumption
Affected Products
| Product | Versions |
|---|---|
nodemailernodemailer |
|
References
- GitHub Security Advisory (GHSA-2x7j-588g-ccc2)vendor-advisory
- Patch Commitpatch
- Patch Commitpatch
- Patch Commitpatch
- Patch Commitpatch
- VulnCheck Advisory: Nodemailer before 9.1.0 Denial of Service via addressparserthird-party-advisory
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