CVE-2026-100700nodemailer before 10.0.6 Denial of Service via addressparser
Updated under an hour ago ()
Does this affect you?
It affects nodemailer. Add what you run to find out whether that includes you.
EPSS puts the chance of exploitation in the next 30 days at 0.28%, higher than 19% of scored CVEs.
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nodemailer before 10.0.6 contains a denial of service vulnerability in the addressparser free-text fallback regex pattern that exhibits quadratic backtracking behavior. Attackers can supply crafted email header values with long whitespace-free runs to block the Node.js event loop for tens of seconds, causing service unavailability.
- CVSS
- 7.5 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- CWE-407
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- 0.28% (percentile 19)
- Assigned by
- VulnCheck
- NVD analysis
- Awaiting Analysis
- Record last updated
- Sep 28, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
nodemailer nodemailer nodemailer:nodemailer (from the name) | before 10.0.6; 10.0.6 not affected | CNA record |
References
- https://github.com/nodemailer/nodemailer/security/advisories/GHSA-v53p-9fqp-m79jvendor-advisory
- https://www.vulncheck.com/advisories/nodemailer-before-10.0.6-denial-of-service-via-addressparserthird-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.