CVE catalog

CVE-2026-100702

Nodemailer before 10.0.2 fails to properly flatten deeply nested arrays in recipient fields such as to, cc, and bcc, allowing attackers to cause stack exhaustion. Attackers can supply a deeply nested

[CVE catalog]

Severity: High · CVSS 8.2CVSS:4.0/AV:N/AC:H/AT:P/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
Published: Sep 26, 2026, 1:23:57 PM UTC
Updated: Sep 26, 2026, 2:16:55 PM UTC
Source: [NVD] · [CVE record]
EPSS: 0.25% · Oct 25, 2026

Nodemailer before 10.0.2 fails to properly flatten deeply nested arrays in recipient fields such as to, cc, and bcc, allowing attackers to cause stack exhaustion. Attackers can supply a deeply nested JSON recipient array that triggers recursive Array.toString() conversion, exhausting the call stack and terminating the Node.js process.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	node-nodemailer	sid	`10.1.7+~8.0.2-1`	fixed
Debian	node-nodemailer	forky	`10.0.14+~8.0.2-1`	fixed
Debian	node-nodemailer	trixie	`6.10.0+~6.4.17-1+deb13u1`	vulnerable
Debian	node-nodemailer	bookworm	`6.8.0+~6.4.6-1`	vulnerable

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	node-nodemailer	source	sid	`10.0.10+~8.0.1-1`	not yet assigned	Not reported	Not reported
Debian	node-nodemailer	source	forky	`10.0.10+~8.0.1-1`	not yet assigned	Not reported	Not reported
Debian	node-nodemailer	source	trixie	`(unfixed)`	not yet assigned	Not reported	Not reported
Debian	node-nodemailer	source	bookworm	`(unfixed)`	not yet assigned	Not reported	Not reported

Notes

[trixie] node-nodemailer: Minor issue [bookworm] node-nodemailer: Minor issue

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[node-nodemailer]Affected
Details (2)
- 6.8.0+~6.4.6-1 · all · bookworm
  Affected
  nvd · node-nodemailer · debian · bookworm; nvd · node-nodemailer · debian · 12
- 6.8.0+~6.4.6-1 · all · bookworm
  Affected
  nvd · node-nodemailer · debian · bookworm; nvd · node-nodemailer · debian · 12

[Debian 13 (Trixie)]

[node-nodemailer]Affected
Details (2)
- 6.10.0+~6.4.17-1+deb13u1 · all · trixie
  Affected
  nvd · node-nodemailer · debian · 13
- 6.10.0+~6.4.17-1+deb13u1 · all · trixie
  Affected
  nvd · node-nodemailer · debian · 13

Observed: Oct 23, 2026, 7:48:14 PM UTC

References

[Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]