Vulnerability · Published Aug 31, 2026 · Assigned by VulnCheck
CVE-2026-82660Nodemailer jsonTransport bypasses disableFileAccess and disableUrlAccess
Medium 5.4
In plain English
A medium-severity missing authorization in nodemailer from nodemailer. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 18% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)5.4Medium
Exploit odds (30 days)0.3%top 82.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
Nodemailer before 8.0.9 fails to enforce disableFileAccess and disableUrlAccess options during message normalization in jsonTransport. Attackers can read local files or fetch URLs by supplying path or href values in message content fields, bypassing intended access controls.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | node-nodemailer | no fix listed | DEBIAN-CVE-2026-82660 |
| Debian:13 | node-nodemailer | no fix listed | DEBIAN-CVE-2026-82660 |
| Debian:14 | node-nodemailer | 8.0.11+~8.0.1-1 | DEBIAN-CVE-2026-82660 |
| Ubuntu:22.04:LTS | node-nodemailer | no fix listed | UBUNTU-CVE-2026-82660 |
| Ubuntu:24.04:LTS | node-nodemailer | no fix listed | UBUNTU-CVE-2026-82660 |
| Ubuntu:26.04:LTS | node-nodemailer | no fix listed | UBUNTU-CVE-2026-82660 |
| npm | nodemailer | 8.0.9 | GHSA-wqvq-jvpq-h66f |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| nodemailer | nodemailer | 0 – before 8.0.9 |
Weakness: CWE-862 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
References
- GitHub Security Advisory (GHSA-wqvq-jvpq-h66f) vendor-advisory
- VulnCheck Advisory: Nodemailer jsonTransport bypasses disableFileAccess and disableUrlAccess third-party-advisory