Nodemailer: Nested structured recipient arrays bypass the parser depth limit and cause stack exhaustion DoS

Submission metadata | Field | Value | |---|---| | Ecosystem | npm | | Package | nodemailer | | Repository | https://github.com/nodemailer/nodemailer | | Tested commit | 40d52215aac65b811d7e131bc916f68605efd9d2 | | Current tested version | 10.0.1 | | Confirmed vulnerable versions | 2.7.2, 3.0.0,...

CVE-2026-100702 Nodemailer before 10.0.2 Stack Exhaustion via Nested Recipient Arrays

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...

CVE-2026-100702 Nodemailer before 10.0.2 Stack Exhaustion via Nested Recipient Arrays

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...