CVE-2026-100702

EUVD-2026-87675
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
VulnCheckCNA
5.9 MEDIUM
NETWORK
HIGH
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
VendorProductVersionSource
nodemailernodemailer
𝑥
< 10.0.2
CNA
Debian logo
Debian Releases
Debian Product
Codename
node-nodemailer
bookworm
vulnerable
forky
10.0.10+~8.0.1-1
fixed
sid
10.0.10+~8.0.1-1
fixed
trixie
vulnerable
Common Weakness Enumeration
References
https://github.com/nodemailer/nodemailer/security/advisories/GHSA-8vvx-rff5-p5rq
https://www.vulncheck.com/advisories/nodemailer-before-10.0.2-stack-exhaustion-via-nested-recipient-arrays