{"id":"CVE-2026-100702","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-100702","generatedAt":"2026-10-28T01:51:58.570Z","title":"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.","description":"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.","published":"2026-09-26T14:16:55.000Z","lastModified":"2026-09-30T16:32:18.000Z","status":"Awaiting Analysis","sourceIdentifier":"disclosure@vulncheck.com","cvss":{"version":"4.0","score":8.2,"severity":"HIGH","vector":"CVSS: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/M"},"cwe":["CWE-674"],"affected":[],"epss":{"score":0.0025,"percentile":0.16217,"date":"2026-10-26","history":[{"date":"2026-09-27","score":0.0025,"percentile":0.14684}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.25%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[{"kind":"new","label":"New CVE","at":"2026-09-26T14:16:55.000Z","detail":{"score":"8.2","severity":"HIGH","publishedAt":"2026-09-26T14:16:55.280Z"},"summary":"New CVE, high severity (CVSS 8.2)."}],"references":[{"url":"https://github.com/nodemailer/nodemailer/security/advisories/GHSA-8vvx-rff5-p5rq","source":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/nodemailer-before-10.0.2-stack-exhaustion-via-nested-recipient-arrays","source":"disclosure@vulncheck.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-100702","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}