Vulnerability in node-nodemailer
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as DEBIAN-CVE-2026-82854 has been found in node-nodemailer.
Risk of unauthorized operations or information disclosure.
What to do: upgrade node-nodemailer to 8.0.4+~7.0.11-1 or later.
If unsure, ask your IT team or search "node-nodemailer DEBIAN-CVE-2026-82854" on the vendor's site.
DEBIAN-CVE-2026-82854 (node-nodemailer)
Patched: 8.0.4+~7.0.11-1 — apply immediately
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
A vulnerability (unclassified) exists in node-nodemailer.
Check the vendor advisory for the affected versions of node-nodemailer.
Severity: ?. Risk of unauthorized operations or information disclosure.
Update to 8.0.4+~7.0.11-1.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run grep -r 'node-nodemailer' . against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
-
1
Identify exposureidentify
grep -r 'node-nodemailer' . | grep -v node_modulesリポジトリと本番環境の依存ファイル (package-lock.json / requirements.txt / go.sum / Gemfile.lock 等) で
node-nodemailerを grep し、稼働しているサービス・バージョンを把握する。 -
2
Apply patchpatch
Upgrade node-nodemailer to 8.0.4+~7.0.11-1ステージング環境で 8.0.4+~7.0.11-1 に上げて回帰テスト → 本番反映。回帰テストはアプリの主要ハッピーパスを含めること。
-
3
Post-deployment verificationverify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。
Affected packages
| Package | Affected → Fixed | |
|---|---|---|
| Debian:12node-nodemailer |
All versions→ Not listed |
Not listed |
| Debian:13node-nodemailer |
All versions→ Not listed |
Not listed |
| Debian:14node-nodemailer |
< 8.0.4+~7.0.11-1→ 8.0.4+~7.0.11-1 |
8.0.4+~7.0.11-1 |
Original description The description as published by the source.
Nodemailer before 8.0.4 is vulnerable to SMTP command injection through the unsanitized envelope.size parameter. When an application passes a custom envelope object with a size property containing CRLF characters to sendMail(), the value is concatenated into the SMTP MAIL FROM command (as SIZE=...) without sanitization, allowing injection of arbitrary SMTP commands such as RCPT TO to silently add attacker-controlled recipients. Exploitation requires the application to expose the envelope size to attacker-controlled input, as Nodemailer does not include size in the default auto-constructed envelope.
Source: OSV.dev (Open Source Vulnerabilities) OSV
References
- advisory security-tracker.debian.org